code: public EventsRequest withBatchItem(java.util.Map<String, EventsBatch> batchItem) {
          setBatchItem(batchItem);
          return this;
      }
docs: A batch of events to process. Each BatchItem consists of an endpoint ID as the key, and an EventsBatch object as
  the value.
  
  @param batchItem
  A batch of events to process. Each BatchItem consists of an endpoint ID as the key, and an EventsBatch
  object as the value.
  @return Returns a reference to this object so that method calls can be chained together.