parameters: (message)
docstring: Prints a brief usage string and exits, optionally with an error message.
  
    Args:
      message: The optional error message.
docstring_summary: Prints a brief usage string and exits, optionally with an error message.
docstring_tokens: Prints a brief usage string and exits optionally with an error message .
function: def PrintUsage(message):
    """Prints a brief usage string and exits, optionally with an error message.
  
    Args:
      message: The optional error message.
    """
    sys.stderr.write(_USAGE)
    if message:
      sys.exit('\nFATAL ERROR: ' + message)
    else:
      sys.exit(1)
function_tokens: def PrintUsage ( message ) : sys . stderr . write ( _USAGE ) if message : sys . exit ( '\nFATAL ERROR: ' + message ) else : sys . exit ( 1 )