getActionHandler method
Returns the action handler registered for action or null if none was
registered.
See also:
addActionto add an action.
Implementation
_SemanticsActionHandler getActionHandler(SemanticsAction action) => _actions[action];Returns the action handler registered for action or null if none was
registered.
See also:
addAction to add an action._SemanticsActionHandler getActionHandler(SemanticsAction action) => _actions[action];