@staticmethod<EOL><INDENT>def extract(text, default=UNKNOWN):<DEDENT>
if not text:<EOL><INDENT>return default<EOL><DEDENT>found = CALLING_CONVENTION_TYPES.pattern.match(text)<EOL>if found:<EOL><INDENT>return found.group('<STR_LIT>')<EOL><DEDENT>return default<EOL>
extracts calling convention from the text. If the calling convention
        could not be found, the "default"is used