def snake_to_lower_camel(snake_case_string: str):
  """Converts a snake_case string to a lower_camel_case string.

  Args:
      snake_case_string: The input snake_case string.

  Returns:
      The lower_camel_case string.
  """
  if "_" not in snake_case_string:
    return snake_case_string

  return "".join([
      s.lower() if i == 0 else s.capitalize()
      for i, s in enumerate(snake_case_string.split("_"))
  ])
Converts a snake_case string to a lower_camel_case string.

  Args:
      snake_case_string: The input snake_case string.

  Returns:
      The lower_camel_case string.
  
src/google/adk/tools/openapi_tool/openapi_spec_parser/rest_api_tool.py