docs: def _from_dict(cls, _dict):
          """Initialize a UnalignedElement object from a json dictionary."""
          args = {}
          if 'document_label' in _dict:
              args['document_label'] = _dict.get('document_label')
          if 'location' in _dict:
              args['location'] = Location._from_dict(_dict.get('location'))
          if 'text' in _dict:
              args['text'] = _dict.get('text')
          if 'types' in _dict:
              args['types'] = [
                  TypeLabelComparison._from_dict(x) for x in (_dict.get('types'))
              ]
          if 'categories' in _dict:
              args['categories'] = [
                  CategoryComparison._from_dict(x)
                  for x in (_dict.get('categories'))
              ]
          if 'attributes' in _dict:
              args['attributes'] = [
                  Attribute._from_dict(x) for x in (_dict.get('attributes'))
              ]
          return cls(**args)