def get_auth_scheme_name(self) -> str:
    """Returns the name of the auth scheme for this operation from the spec."""
    if self._operation.security:
      scheme_name = list(self._operation.security[0].keys())[0]
      return scheme_name
    return ''
Returns the name of the auth scheme for this operation from the spec.
src/google/adk/tools/openapi_tool/openapi_spec_parser/operation_parser.py