docstr: Called when processing of a batch of jobs has started.
code: def onBatchStarted(self, batchSubmitted: Any) -> None:
      """
      Called when processing of a batch of jobs has started.
      """
      pass
  
file_path: spark/python/pyspark/streaming/listener.py
imports: from typing import Any
label_desc: Use image node_id 7 for calling the StreamingListener obj's underlying member method code with example usage: obj.onBatchStarted(batchSubmitted) without return types