def extract_identifier!(args)
      options = extract_options!(args)
      identifier = normalize_set_identifier(extract_environment!(options))
      args << options
      identifier
    end
def extract_identifier!(args)
      options = extract_options!(args)
      identifier = normalize_set_identifier(extract_environment!(options))
      args << options
      identifier
    end
Shorthand to extra an identifier from args.
 Since we