class_docstr: OpenAPIServiceConnector connects to OpenAPI services, allowing for the invocation of methods specified in
  an OpenAPI specification of that service. It integrates with ChatMessage interface, where messages are used to
  determine the method to be called and the parameters to be passed. The message payload should be a JSON formatted
  string consisting of the method name and the parameters to be passed to the method. The method name and parameters
  are then used to invoke the method on the OpenAPI service. The response from the service is returned as a
  ChatMessage.
  
  Before using this component, one needs to register functions from the OpenAPI specification with LLM.
  This can be done using the OpenAPIServiceToFunctions component.
docstr: Initializes the OpenAPIServiceConnector instance
  :param service_auths: A dictionary containing the service name and token to be used for authentication.
code: def __init__(self, service_auths: Optional[Dict[str, Any]] = None):
      """
      Initializes the OpenAPIServiceConnector instance
      :param service_auths: A dictionary containing the service name and token to be used for authentication.
      """
      openapi_imports.check()
      self.service_authentications = service_auths or {}
  
file_path: haystack/haystack/components/connectors/openapi_service.py
imports: import json
  import logging
  from typing import List, Dict, Any, Optional
  from haystack import component
  from haystack.dataclasses import ChatMessage, ChatRole
  from haystack.lazy_imports import LazyImport
label_desc: Use image node_id 1 to create a new OpenAPIServiceConnector object  with example: obj = OpenAPIServiceConnector(service_auths)