Closes the AMQP link, i.e. allows the Detach frame to be emitted with closed=true set.
If the closure is being locally initiated, the {@link #closeHandler(Handler)} should be used to handle the peer
sending their Detach frame with closed=true (and {@link #detachHandler(Handler)} can be used to handle the peer
sending their Detach frame with closed=false). When use of the link is complete, i.e it is locally and
remotely closed, {@link #free()} must be called to ensure related resources can be tidied up.
Closes the AMQP link, i.e. allows the Detach frame to be emitted with closed=true set.
If the closure is being locally initiated, the {@link #closeHandler(Handler)} should be used to handle the peer sending their Detach frame with closed=true (and {@link #detachHandler(Handler)} can be used to handle the peer sending their Detach frame with closed=false). When use of the link is complete, i.e it is locally and remotely closed, {@link #free()} must be called to ensure related resources can be tidied up.
@return the link