'Set whether this node should be bypassed.
When bypassed, a Node\'s process() method is never called. In some cases,
data is automatically copied directly from specific input nodes to
output nodes instead (see the bypass argument to Terminal.__init__).
This is usually called when the user disables a node from the flowchart
control panel.'

def bypass(self, byp):

    self._bypass = byp
    if (self.bypassButton is not None):
        self.bypassButton.setChecked(byp)
    self.update()
