code: public Elasticsearch bulkFlushMaxSize(String maxSize) {
  		internalProperties.putMemorySize(CONNECTOR_BULK_FLUSH_MAX_SIZE, MemorySize.parse(maxSize, MemorySize.MemoryUnit.BYTES));
  		return this;
  	}
docs: Configures how to buffer elements before sending them in bulk to the cluster for efficiency.
  
  <p>Sets the maximum size of buffered actions per bulk request (using the syntax of {@link MemorySize}).