Properties of a ToolCallResult.
Properties:
| Name | Type | Attributes | Description | 
|---|---|---|---|
tool | 
      
      string | null | 
            
              <optional> | 
        
        
        
           ToolCallResult tool  | 
    
action | 
      
      string | null | 
            
              <optional> | 
        
        
        
           ToolCallResult action  | 
    
error | 
      
      google.cloud.dialogflow.cx.v3beta1.ToolCallResult.IError | null | 
            
              <optional> | 
        
        
        
           ToolCallResult error  | 
    
outputParameters | 
      
      google.protobuf.IStruct | null | 
            
              <optional> | 
        
        
        
           ToolCallResult outputParameters  |