def emit_message(self, lines):
        """
        Emit message.
        Default printer emits messages to stderr

        Parameters
        ----------
        lines: list
            List of strings containing each line of the message
        """

        for line in lines:
            print(line, file=sys.stderr)
Emit message.
        Default printer emits messages to stderr

        Parameters
        ----------
        lines: list
            List of strings containing each line of the message