EntityTypesClient

EntityTypesClient

Entities are extracted from user input and represent parameters that are meaningful to your application. For example, a date range, a proper name such as a geographic location or landmark, and so on. Entities represent actionable data for your application.

When you define an entity, you can also include synonyms that all map to that entity. For example, "soft drink", "soda", "pop", and so on.

There are three types of entities:

  • System - entities that are defined by the Dialogflow API for common data types such as date, time, currency, and so on. A system entity is represented by the EntityType type.

  • Developer - entities that are defined by you that represent actionable data that is meaningful to your application. For example, you could define a pizza.sauce entity for red or white pizza sauce, a pizza.cheese entity for the different types of cheese on a pizza, a pizza.topping entity for different toppings, and so on. A developer entity is represented by the EntityType type.

  • User - entities that are built for an individual user such as favorites, preferences, playlists, and so on. A user entity is represented by the SessionEntityType type.

For more information about entity types, see the Dialogflow documentation.

Constructor

new EntityTypesClient(optionsopt)

Construct an instance of EntityTypesClient.

Parameters:
Name Type Attributes Description
options object <optional>

The configuration object. See the subsequent parameters for more details.

Properties
Name Type Attributes Description
credentials object <optional>

Credentials object.

Properties
Name Type Attributes Description
client_email string <optional>
private_key string <optional>
email string <optional>

Account email address. Required when using a .pem or .p12 keyFilename.
keyFilename string <optional>

Full path to the a .json, .pem, or .p12 key downloaded from the Google Developers Console. If you provide a path to a JSON file, the projectId option below is not necessary. NOTE: .pem and .p12 require you to specify options.email as well.
port number <optional>

The port on which to connect to the remote host.
projectId string <optional>

The project ID from the Google Developer's Console, e.g. 'grape-spaceship-123'. We will also check the environment variable GCLOUD_PROJECT for your project ID. If your app is running in an environment which supports Application Default Credentials, your project ID will be detected automatically.
promise function <optional>

Custom promise module to use instead of native Promises.
apiEndpoint string <optional>

The domain name of the API remote host.
Source:

Members

(static) apiEndpoint

The DNS address for this API service - same as servicePath(), exists for compatibility reasons.

Source:

(static) port

The port for this API service.

Source:

(static) scopes

The scopes needed to make gRPC calls for every method defined in this service.

Source:

(static) servicePath

The DNS address for this API service.

Source:

Methods

batchCreateEntities(request, optionsopt, callbackopt) → {Promise}

Creates multiple new entities in the specified entity type.

Operation <response: google.protobuf.Empty>

Parameters:
Name Type Attributes Description
request Object

The request object that will be sent.

Properties
Name Type Attributes Description
parent string

Required. The name of the entity type to create entities in. Format: projects/<Project ID>/agent/entityTypes/<Entity Type ID>.
entities Array.<Object>

Required. The entities to create.

This object should have the same structure as Entity
languageCode string <optional>

Optional. The language of entity synonyms defined in entities. If not specified, the agent's default language is used. Many languages are supported. Note: languages must be enabled in the agent before they can be used.
options Object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is a gax.Operation object.
Source:
Example
const dialogflow = require('dialogflow');

const client = new dialogflow.v2beta1.EntityTypesClient({
  // optional auth parameters.
});

const formattedParent = client.entityTypePath('[PROJECT]', '[ENTITY_TYPE]');
const entities = [];
const request = {
  parent: formattedParent,
  entities: entities,
};

// Handle the operation using the promise pattern.
client.batchCreateEntities(request)
  .then(responses => {
    const [operation, initialApiResponse] = responses;

    // Operation#promise starts polling for the completion of the LRO.
    return operation.promise();
  })
  .then(responses => {
    const result = responses[0];
    const metadata = responses[1];
    const finalApiResponse = responses[2];
  })
  .catch(err => {
    console.error(err);
  });

const formattedParent = client.entityTypePath('[PROJECT]', '[ENTITY_TYPE]');
const entities = [];
const request = {
  parent: formattedParent,
  entities: entities,
};

// Handle the operation using the event emitter pattern.
client.batchCreateEntities(request)
  .then(responses => {
    const [operation, initialApiResponse] = responses;

    // Adding a listener for the "complete" event starts polling for the
    // completion of the operation.
    operation.on('complete', (result, metadata, finalApiResponse) => {
      // doSomethingWith(result);
    });

    // Adding a listener for the "progress" event causes the callback to be
    // called on any change in metadata when the operation is polled.
    operation.on('progress', (metadata, apiResponse) => {
      // doSomethingWith(metadata)
    });

    // Adding a listener for the "error" event handles any errors found during polling.
    operation.on('error', err => {
      // throw(err);
    });
  })
  .catch(err => {
    console.error(err);
  });

const formattedParent = client.entityTypePath('[PROJECT]', '[ENTITY_TYPE]');
const entities = [];
const request = {
  parent: formattedParent,
  entities: entities,
};

// Handle the operation using the await pattern.
const [operation] = await client.batchCreateEntities(request);

const [response] = await operation.promise();

batchDeleteEntities(request, optionsopt, callbackopt) → {Promise}

Deletes entities in the specified entity type.

Operation <response: google.protobuf.Empty>

Parameters:
Name Type Attributes Description
request Object

The request object that will be sent.

Properties
Name Type Attributes Description
parent string

Required. The name of the entity type to delete entries for. Format: projects/<Project ID>/agent/entityTypes/<Entity Type ID>.
entityValues Array.<string>

Required. The canonical values of the entities to delete. Note that these are not fully-qualified names, i.e. they don't start with projects/<Project ID>.
languageCode string <optional>

Optional. The language of entity synonyms defined in entities. If not specified, the agent's default language is used. Many languages are supported. Note: languages must be enabled in the agent before they can be used.
options Object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is a gax.Operation object.
Source:
Example
const dialogflow = require('dialogflow');

const client = new dialogflow.v2beta1.EntityTypesClient({
  // optional auth parameters.
});

const formattedParent = client.entityTypePath('[PROJECT]', '[ENTITY_TYPE]');
const entityValues = [];
const request = {
  parent: formattedParent,
  entityValues: entityValues,
};

// Handle the operation using the promise pattern.
client.batchDeleteEntities(request)
  .then(responses => {
    const [operation, initialApiResponse] = responses;

    // Operation#promise starts polling for the completion of the LRO.
    return operation.promise();
  })
  .then(responses => {
    const result = responses[0];
    const metadata = responses[1];
    const finalApiResponse = responses[2];
  })
  .catch(err => {
    console.error(err);
  });

const formattedParent = client.entityTypePath('[PROJECT]', '[ENTITY_TYPE]');
const entityValues = [];
const request = {
  parent: formattedParent,
  entityValues: entityValues,
};

// Handle the operation using the event emitter pattern.
client.batchDeleteEntities(request)
  .then(responses => {
    const [operation, initialApiResponse] = responses;

    // Adding a listener for the "complete" event starts polling for the
    // completion of the operation.
    operation.on('complete', (result, metadata, finalApiResponse) => {
      // doSomethingWith(result);
    });

    // Adding a listener for the "progress" event causes the callback to be
    // called on any change in metadata when the operation is polled.
    operation.on('progress', (metadata, apiResponse) => {
      // doSomethingWith(metadata)
    });

    // Adding a listener for the "error" event handles any errors found during polling.
    operation.on('error', err => {
      // throw(err);
    });
  })
  .catch(err => {
    console.error(err);
  });

const formattedParent = client.entityTypePath('[PROJECT]', '[ENTITY_TYPE]');
const entityValues = [];
const request = {
  parent: formattedParent,
  entityValues: entityValues,
};

// Handle the operation using the await pattern.
const [operation] = await client.batchDeleteEntities(request);

const [response] = await operation.promise();

batchDeleteEntityTypes(request, optionsopt, callbackopt) → {Promise}

Deletes entity types in the specified agent.

Operation <response: google.protobuf.Empty>

Parameters:
Name Type Attributes Description
request Object

The request object that will be sent.

Properties
Name Type Description
parent string

Required. The name of the agent to delete all entities types for. Format: projects/<Project ID>/agent.
entityTypeNames Array.<string>

Required. The names entity types to delete. All names must point to the same agent as parent.
options Object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is a gax.Operation object.
Source:
Example
const dialogflow = require('dialogflow');

const client = new dialogflow.v2beta1.EntityTypesClient({
  // optional auth parameters.
});

const formattedParent = client.projectAgentPath('[PROJECT]');
const entityTypeNames = [];
const request = {
  parent: formattedParent,
  entityTypeNames: entityTypeNames,
};

// Handle the operation using the promise pattern.
client.batchDeleteEntityTypes(request)
  .then(responses => {
    const [operation, initialApiResponse] = responses;

    // Operation#promise starts polling for the completion of the LRO.
    return operation.promise();
  })
  .then(responses => {
    const result = responses[0];
    const metadata = responses[1];
    const finalApiResponse = responses[2];
  })
  .catch(err => {
    console.error(err);
  });

const formattedParent = client.projectAgentPath('[PROJECT]');
const entityTypeNames = [];
const request = {
  parent: formattedParent,
  entityTypeNames: entityTypeNames,
};

// Handle the operation using the event emitter pattern.
client.batchDeleteEntityTypes(request)
  .then(responses => {
    const [operation, initialApiResponse] = responses;

    // Adding a listener for the "complete" event starts polling for the
    // completion of the operation.
    operation.on('complete', (result, metadata, finalApiResponse) => {
      // doSomethingWith(result);
    });

    // Adding a listener for the "progress" event causes the callback to be
    // called on any change in metadata when the operation is polled.
    operation.on('progress', (metadata, apiResponse) => {
      // doSomethingWith(metadata)
    });

    // Adding a listener for the "error" event handles any errors found during polling.
    operation.on('error', err => {
      // throw(err);
    });
  })
  .catch(err => {
    console.error(err);
  });

const formattedParent = client.projectAgentPath('[PROJECT]');
const entityTypeNames = [];
const request = {
  parent: formattedParent,
  entityTypeNames: entityTypeNames,
};

// Handle the operation using the await pattern.
const [operation] = await client.batchDeleteEntityTypes(request);

const [response] = await operation.promise();

batchUpdateEntities(request, optionsopt, callbackopt) → {Promise}

Updates or creates multiple entities in the specified entity type. This method does not affect entities in the entity type that aren't explicitly specified in the request.

Operation <response: google.protobuf.Empty>

Parameters:
Name Type Attributes Description
request Object

The request object that will be sent.

Properties
Name Type Attributes Description
parent string

Required. The name of the entity type to update or create entities in. Format: projects/<Project ID>/agent/entityTypes/<Entity Type ID>.
entities Array.<Object>

Required. The entities to update or create.

This object should have the same structure as Entity
languageCode string <optional>

Optional. The language of entity synonyms defined in entities. If not specified, the agent's default language is used. Many languages are supported. Note: languages must be enabled in the agent before they can be used.
updateMask Object <optional>

Optional. The mask to control which fields get updated.

This object should have the same structure as FieldMask
options Object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is a gax.Operation object.
Source:
Example
const dialogflow = require('dialogflow');

const client = new dialogflow.v2beta1.EntityTypesClient({
  // optional auth parameters.
});

const formattedParent = client.entityTypePath('[PROJECT]', '[ENTITY_TYPE]');
const entities = [];
const request = {
  parent: formattedParent,
  entities: entities,
};

// Handle the operation using the promise pattern.
client.batchUpdateEntities(request)
  .then(responses => {
    const [operation, initialApiResponse] = responses;

    // Operation#promise starts polling for the completion of the LRO.
    return operation.promise();
  })
  .then(responses => {
    const result = responses[0];
    const metadata = responses[1];
    const finalApiResponse = responses[2];
  })
  .catch(err => {
    console.error(err);
  });

const formattedParent = client.entityTypePath('[PROJECT]', '[ENTITY_TYPE]');
const entities = [];
const request = {
  parent: formattedParent,
  entities: entities,
};

// Handle the operation using the event emitter pattern.
client.batchUpdateEntities(request)
  .then(responses => {
    const [operation, initialApiResponse] = responses;

    // Adding a listener for the "complete" event starts polling for the
    // completion of the operation.
    operation.on('complete', (result, metadata, finalApiResponse) => {
      // doSomethingWith(result);
    });

    // Adding a listener for the "progress" event causes the callback to be
    // called on any change in metadata when the operation is polled.
    operation.on('progress', (metadata, apiResponse) => {
      // doSomethingWith(metadata)
    });

    // Adding a listener for the "error" event handles any errors found during polling.
    operation.on('error', err => {
      // throw(err);
    });
  })
  .catch(err => {
    console.error(err);
  });

const formattedParent = client.entityTypePath('[PROJECT]', '[ENTITY_TYPE]');
const entities = [];
const request = {
  parent: formattedParent,
  entities: entities,
};

// Handle the operation using the await pattern.
const [operation] = await client.batchUpdateEntities(request);

const [response] = await operation.promise();

batchUpdateEntityTypes(request, optionsopt, callbackopt) → {Promise}

Updates/Creates multiple entity types in the specified agent.

Operation <response: BatchUpdateEntityTypesResponse>

Parameters:
Name Type Attributes Description
request Object

The request object that will be sent.

Properties
Name Type Attributes Description
parent string

Required. The name of the agent to update or create entity types in. Format: projects/<Project ID>/agent.
entityTypeBatchUri string <optional>

The URI to a Google Cloud Storage file containing entity types to update or create. The file format can either be a serialized proto (of EntityBatch type) or a JSON object. Note: The URI must start with "gs://".
entityTypeBatchInline Object <optional>

The collection of entity types to update or create.

This object should have the same structure as EntityTypeBatch
languageCode string <optional>

Optional. The language of entity synonyms defined in entity_types. If not specified, the agent's default language is used. Many languages are supported. Note: languages must be enabled in the agent before they can be used.
updateMask Object <optional>

Optional. The mask to control which fields get updated.

This object should have the same structure as FieldMask
options Object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is a gax.Operation object.
Source:
Example
const dialogflow = require('dialogflow');

const client = new dialogflow.v2beta1.EntityTypesClient({
  // optional auth parameters.
});

const formattedParent = client.projectAgentPath('[PROJECT]');

// Handle the operation using the promise pattern.
client.batchUpdateEntityTypes({parent: formattedParent})
  .then(responses => {
    const [operation, initialApiResponse] = responses;

    // Operation#promise starts polling for the completion of the LRO.
    return operation.promise();
  })
  .then(responses => {
    const result = responses[0];
    const metadata = responses[1];
    const finalApiResponse = responses[2];
  })
  .catch(err => {
    console.error(err);
  });

const formattedParent = client.projectAgentPath('[PROJECT]');

// Handle the operation using the event emitter pattern.
client.batchUpdateEntityTypes({parent: formattedParent})
  .then(responses => {
    const [operation, initialApiResponse] = responses;

    // Adding a listener for the "complete" event starts polling for the
    // completion of the operation.
    operation.on('complete', (result, metadata, finalApiResponse) => {
      // doSomethingWith(result);
    });

    // Adding a listener for the "progress" event causes the callback to be
    // called on any change in metadata when the operation is polled.
    operation.on('progress', (metadata, apiResponse) => {
      // doSomethingWith(metadata)
    });

    // Adding a listener for the "error" event handles any errors found during polling.
    operation.on('error', err => {
      // throw(err);
    });
  })
  .catch(err => {
    console.error(err);
  });

const formattedParent = client.projectAgentPath('[PROJECT]');

// Handle the operation using the await pattern.
const [operation] = await client.batchUpdateEntityTypes({parent: formattedParent});

const [response] = await operation.promise();

createEntityType(request, optionsopt, callbackopt) → {Promise}

Creates an entity type in the specified agent.

Parameters:
Name Type Attributes Description
request Object

The request object that will be sent.

Properties
Name Type Attributes Description
parent string

Required. The agent to create a entity type for. Format: projects/<Project ID>/agent.
entityType Object

Required. The entity type to create.

This object should have the same structure as EntityType
languageCode string <optional>

Optional. The language of entity synonyms defined in entity_type. If not specified, the agent's default language is used. Many languages are supported. Note: languages must be enabled in the agent before they can be used.
options Object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is an object representing EntityType.
Source:
Example
const dialogflow = require('dialogflow');

const client = new dialogflow.v2beta1.EntityTypesClient({
  // optional auth parameters.
});

const formattedParent = client.projectAgentPath('[PROJECT]');
const entityType = {};
const request = {
  parent: formattedParent,
  entityType: entityType,
};
client.createEntityType(request)
  .then(responses => {
    const response = responses[0];
    // doThingsWith(response)
  })
  .catch(err => {
    console.error(err);
  });

deleteEntityType(request, optionsopt, callbackopt) → {Promise}

Deletes the specified entity type.

Parameters:
Name Type Attributes Description
request Object

The request object that will be sent.

Properties
Name Type Description
name string

Required. The name of the entity type to delete. Format: projects/<Project ID>/agent/entityTypes/<EntityType ID>.
options Object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.
Source:
Example
const dialogflow = require('dialogflow');

const client = new dialogflow.v2beta1.EntityTypesClient({
  // optional auth parameters.
});

const formattedName = client.entityTypePath('[PROJECT]', '[ENTITY_TYPE]');
client.deleteEntityType({name: formattedName}).catch(err => {
  console.error(err);
});

entityTypePath(project, entityType) → {String}

Return a fully-qualified entity_type resource name string.

Parameters:
Name Type Description
project String
entityType String
Source:

getEntityType(request, optionsopt, callbackopt) → {Promise}

Retrieves the specified entity type.

Parameters:
Name Type Attributes Description
request Object

The request object that will be sent.

Properties
Name Type Attributes Description
name string

Required. The name of the entity type. Format: projects/<Project ID>/agent/entityTypes/<EntityType ID>.
languageCode string <optional>

Optional. The language to retrieve entity synonyms for. If not specified, the agent's default language is used. Many languages are supported. Note: languages must be enabled in the agent before they can be used.
options Object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is an object representing EntityType.
Source:
Example
const dialogflow = require('dialogflow');

const client = new dialogflow.v2beta1.EntityTypesClient({
  // optional auth parameters.
});

const formattedName = client.entityTypePath('[PROJECT]', '[ENTITY_TYPE]');
client.getEntityType({name: formattedName})
  .then(responses => {
    const response = responses[0];
    // doThingsWith(response)
  })
  .catch(err => {
    console.error(err);
  });

getProjectId(callback)

Return the project ID used by this class.

Parameters:
Name Type Description
callback function

the callback to be called with the current project Id.
Source:

listEntityTypes(request, optionsopt, callbackopt) → {Promise}

Returns the list of all entity types in the specified agent.

Parameters:
Name Type Attributes Description
request Object

The request object that will be sent.

Properties
Name Type Attributes Description
parent string

Required. The agent to list all entity types from. Format: projects/<Project ID>/agent.
languageCode string <optional>

Optional. The language to list entity synonyms for. If not specified, the agent's default language is used. Many languages are supported. Note: languages must be enabled in the agent before they can be used.
pageSize number <optional>

The maximum number of resources contained in the underlying API response. If page streaming is performed per-resource, this parameter does not affect the return value. If page streaming is performed per-page, this determines the maximum number of resources in a page.
options Object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is Array of EntityType.

When autoPaginate: false is specified through options, it contains the result in a single response. If the response indicates the next page exists, the third parameter is set to be used for the next request object. The fourth parameter keeps the raw response object of an object representing ListEntityTypesResponse.
Source:
Example
const dialogflow = require('dialogflow');

const client = new dialogflow.v2beta1.EntityTypesClient({
  // optional auth parameters.
});

// Iterate over all elements.
const formattedParent = client.projectAgentPath('[PROJECT]');

client.listEntityTypes({parent: formattedParent})
  .then(responses => {
    const resources = responses[0];
    for (const resource of resources) {
      // doThingsWith(resource)
    }
  })
  .catch(err => {
    console.error(err);
  });

// Or obtain the paged response.
const formattedParent = client.projectAgentPath('[PROJECT]');


const options = {autoPaginate: false};
const callback = responses => {
  // The actual resources in a response.
  const resources = responses[0];
  // The next request if the response shows that there are more responses.
  const nextRequest = responses[1];
  // The actual response object, if necessary.
  // const rawResponse = responses[2];
  for (const resource of resources) {
    // doThingsWith(resource);
  }
  if (nextRequest) {
    // Fetch the next page.
    return client.listEntityTypes(nextRequest, options).then(callback);
  }
}
client.listEntityTypes({parent: formattedParent}, options)
  .then(callback)
  .catch(err => {
    console.error(err);
  });

listEntityTypesStream(request, optionsopt) → {Stream}

Equivalent to listEntityTypes, but returns a NodeJS Stream object.

This fetches the paged responses for listEntityTypes continuously and invokes the callback registered for 'data' event for each element in the responses.

The returned object has 'end' method when no more elements are required.

autoPaginate option will be ignored.

Parameters:
Name Type Attributes Description
request Object

The request object that will be sent.

Properties
Name Type Attributes Description
parent string

Required. The agent to list all entity types from. Format: projects/<Project ID>/agent.
languageCode string <optional>

Optional. The language to list entity synonyms for. If not specified, the agent's default language is used. Many languages are supported. Note: languages must be enabled in the agent before they can be used.
pageSize number <optional>

The maximum number of resources contained in the underlying API response. If page streaming is performed per-resource, this parameter does not affect the return value. If page streaming is performed per-page, this determines the maximum number of resources in a page.
options Object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
Source:
See:
Example
const dialogflow = require('dialogflow');

const client = new dialogflow.v2beta1.EntityTypesClient({
  // optional auth parameters.
});

const formattedParent = client.projectAgentPath('[PROJECT]');
client.listEntityTypesStream({parent: formattedParent})
  .on('data', element => {
    // doThingsWith(element)
  }).on('error', err => {
    console.log(err);
  });

matchEntityTypeFromEntityTypeName(entityTypeName) → {String}

Parse the entityTypeName from a entity_type resource.

Parameters:
Name Type Description
entityTypeName String

A fully-qualified path representing a entity_type resources.
Source:

matchProjectFromEntityTypeName(entityTypeName) → {String}

Parse the entityTypeName from a entity_type resource.

Parameters:
Name Type Description
entityTypeName String

A fully-qualified path representing a entity_type resources.
Source:

matchProjectFromProjectAgentName(projectAgentName) → {String}

Parse the projectAgentName from a project_agent resource.

Parameters:
Name Type Description
projectAgentName String

A fully-qualified path representing a project_agent resources.
Source:

projectAgentPath(project) → {String}

Return a fully-qualified project_agent resource name string.

Parameters:
Name Type Description
project String
Source:

updateEntityType(request, optionsopt, callbackopt) → {Promise}

Updates the specified entity type.

Parameters:
Name Type Attributes Description
request Object

The request object that will be sent.

Properties
Name Type Attributes Description
entityType Object

Required. The entity type to update.

This object should have the same structure as EntityType
languageCode string <optional>

Optional. The language of entity synonyms defined in entity_type. If not specified, the agent's default language is used. Many languages are supported. Note: languages must be enabled in the agent before they can be used.
updateMask Object <optional>

Optional. The mask to control which fields get updated.

This object should have the same structure as FieldMask
options Object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is an object representing EntityType.
Source:
Example
const dialogflow = require('dialogflow');

const client = new dialogflow.v2beta1.EntityTypesClient({
  // optional auth parameters.
});

const entityType = {};
client.updateEntityType({entityType: entityType})
  .then(responses => {
    const response = responses[0];
    // doThingsWith(response)
  })
  .catch(err => {
    console.error(err);
  });