code: def write_labels(self, labels_path):
      etas.write_json(self.base_labels, labels_path)
  
imports: from collections import defaultdict
  import os
  import eta.core.serial
  import fiftyone.core.odm.dataset
label_desc: Use image node_id 9 for calling the OpenLABELLabels obj's underlying member method code with example usage: obj.write_labels(labels_path) without return types