@classmethod<EOL><INDENT>def disconnect(cls, name=None):<DEDENT>
try:<EOL><INDENT>del cls.connections[name]<EOL><DEDENT>except KeyError:<EOL><INDENT>pass<EOL><DEDENT>
remove a connection by name.
If no name is passed in, it assumes default.

Useful for testing.

:param name:
:return: