parameters: (self, event)
docstring: Handle an event that gets passed down the stack.
docstring_summary: Handle an event that gets passed down the stack.
docstring_tokens: Handle an event that gets passed down the stack .
function: def handle_event(self, event):
          """Handle an event that gets passed down the stack."""
          raise NotImplementedError
function_tokens: def handle_event ( self , event ) : raise NotImplementedError