@abstractmethod
  def on_element(self, element, window, context):
    pass
Add a new path to known_paths by combining sitedir and 'name' or execute
dataset/ETHPy150Open GoogleCloudPlatform/DataflowPythonSDK/google/cloud/dataflow/transforms/trigger.py/TriggerFn.on_element--crossover with--dataset/ETHPy150Open babble/babble/include/jython/Lib/site.py/addpackage