class_docstr: Box collection.
class_docstr_tok: ["Box","collection","."]
code: def has_field(self, field):
      return field in self.data
  
file_path: DALI/docs/examples/use_cases/tensorflow/efficientdet/pipeline/anchors_utils/box_list.py
imports: import tensorflow.compat.v1
label_desc: Use image node_id 7 for calling the BoxList obj's underlying member method code with example usage: obj.has_field(field) and returns: unknown