def install(self):
        assert not IOLoop.initialized()
        IOLoop._instance = self
Handles the user double-clicking on the DockControl.
dataset/ETHPy150Open felipecruz/zmqpy/zmqpy/eventloop/ioloop.py/IOLoop.install--crossover with--dataset/ETHPy150Open enthought/pyface/pyface/dock/idockable.py/IDockable.dockable_dclick