@classmethod
def save(cls, prefix='*', context=None):
    """Return dictionary of variable names and values. A prefix character
        can be used to limit which names are saved.

        `prefix`
            Variable name prefix character, defaults to asterisk which saves
            all variable names and values.
        `context`
            Optional variable context.
        """
    context = cls._get_context(context)
    return context.save(prefix)
