code: def _get_parameter_conversion_entry(parameter_config):
    
    entry = _PARAM_CONVERSION_MAP.get(parameter_config.get('type'))
  
    # Special handling for enum parameters.  An enum's type is 'string', so we
    # need to detect them by the presence of an 'enum' property in their
    # configuration.
    if entry is None and 'enum' in parameter_config:
      entry = _PARAM_CONVERSION_MAP['enum']
  
    return entry
docs: Get information needed to convert the given parameter to its API type.
  
    Args:
      parameter_config: The dictionary containing information specific to the
        parameter in question. This is retrieved from request.parameters in the
        method config.
  
    Returns:
      The entry from _PARAM_CONVERSION_MAP with functions/information needed to
      validate and convert the given parameter from a string to the type expected
      by the API.