(self)
Returns True if this matcher is still "active", that is, it has not
        yet reached the end of the posting list.
Returns True if this matcher is still "active", that is, it has not
        yet reached the end of the posting list.
Returns True if this matcher is still active that is it has not yet reached the end of the posting list .
def is_active(self):
        """Returns True if this matcher is still "active", that is, it has not
        yet reached the end of the posting list.
        """

        raise NotImplementedError
def is_active ( self ) : raise NotImplementedError