@property<EOL><INDENT>def type(self):<DEDENT>
scheme = self._protocol_info.scheme.lower()<EOL>if '<STR_LIT:+>' in scheme:<EOL><INDENT>return scheme.split('<STR_LIT:+>')[<NUM_LIT:0>]<EOL><DEDENT>return scheme<EOL>
Returns the 'transport' name for this mailbox.