Properties of a ToolCall.
Properties:
| Name | Type | Attributes | Description | 
|---|---|---|---|
tool | 
      
      string | null | 
            
              <optional> | 
        
        
        
           ToolCall tool  | 
    
action | 
      
      string | null | 
            
              <optional> | 
        
        
        
           ToolCall action  | 
    
inputParameters | 
      
      google.protobuf.IStruct | null | 
            
              <optional> | 
        
        
        
           ToolCall inputParameters  |