code: def off(self, evnt, func):
          '''
          Remove a previously registered event handler function.
  
          Example:
  
              base.off( 'foo', onFooFunc )
  
          '''
          funcs = self._syn_funcs.get(evnt)
          if funcs is None:
              return
  
          try:
              funcs.remove(func)
          except ValueError:
              pasf off(self, evnt, func):
          '''
          Remove a previously registered event handler function.
  
          Example:
  
              base.off( 'foo', onFooFunc )
  
          '''
          funcs = self._syn_funcs.get(evnt)
          if funcs is None:
              return
  
          try:
              funcs.remove(func)
          except ValueError:
              pass
docs: Remove a previously registered event handler function.
  
          Example:
  
              base.off( 'foo', onFooFunc )