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

        Parameters
        ----------
        cls: process class (mandatory)
            a nipype process class
        nipype_instance: nipype interface (mandatory)
            a nipype interface object that will be documented.
        returnhelp: bool (optional, default False)
            if True return the help string message,
            otherwise display it on the console.
        """
    from .nipype_process import nipype_factory
    cls_instance = nipype_factory(nipype_interface)
    return cls_instance.get_help(returnhelp)
