def complete_vrf_virtual(arg):
ret = complete_vrf(arg)<EOL>search_string = '<STR_LIT>'<EOL>if arg is not None:<EOL><INDENT>search_string = '<STR_LIT>' % arg<EOL><DEDENT>if re.match(search_string, '<STR_LIT:all>'):<EOL><INDENT>ret.append('<STR_LIT:all>')<EOL><DEDENT>return ret<EOL>
Returns list of matching VRFs

        Includes "virtual" VRF 'all' which is used in search
        operations