Enable connection control, using as a token some object implemented on
the remote content provider acceptor's side.
The implementation of this interface must hold a reference to the
supplied token. If the connection gets lost, the reference count of
the token will drop, which the remote content provider acceptor can
observe.
Parameter Acceptor
The remote content provider acceptor on the other side of the
connection.
Parameter Token
Some object implemented on the remote content provider acceptor's side
of the connection.
