@classmethod
def help(cls, returnhelp=False):
    """ Method to print the full help.

        Parameters
        ----------
        cls: process class (mandatory)
            a process class
        returnhelp: bool (optional, default False)
            if True return the help string message,
            otherwise display it on the console.
        """
    cls_instance = cls()
    return cls_instance.get_help(returnhelp)
