def __init__(
      self, operation: Union[Operation, Dict[str, Any], str], should_parse=True
  ):
    """Initializes the OperationParser with an OpenApiOperation.

    Args:
        operation: The OpenApiOperation object or a dictionary to process.
        should_parse: Whether to parse the operation during initialization.
    """
    if isinstance(operation, dict):
      self._operation = Operation.model_validate(operation)
    elif isinstance(operation, str):
      self._operation = Operation.model_validate_json(operation)
    else:
      self._operation = operation

    self._params: List[ApiParameter] = []
    self._return_value: Optional[ApiParameter] = None
    if should_parse:
      self._process_operation_parameters()
      self._process_request_body()
      self._process_return_value()
      self._dedupe_param_names()
Initializes the OperationParser with an OpenApiOperation.

    Args:
        operation: The OpenApiOperation object or a dictionary to process.
        should_parse: Whether to parse the operation during initialization.
    
src/google/adk/tools/openapi_tool/openapi_spec_parser/operation_parser.py