code: def test_get_bytes_features(self):
      schema = text_format.Parse(
          """
          feature {
            name: "fa"
            type: BYTES
            image_domain { }
          }
          feature {
            name: "fb"
            type: BYTES
          }
          feature {
            name: "fc"
            type: INT
            int_domain { }
          }
          feature {
            name: "fd"
            type: FLOAT
          }
          feature {
            name: "fe"
            type: INT
            bool_domain {
              name: "fc_bool_domain"
            }
          }
          feature {
            name: "ff"
            type: STRUCT
            struct_domain {
              feature {
                name: "ff_fa"
                type: BYTES
                image_domain { }
              }
              feature {
                name: "ff_fb"
              }
            }
          }
          """,
          schema_pb2.Schema(),
      )
      self.assertEqual(
          schema_util.get_bytes_features(schema),
          [
              types.FeaturePath(["fa"]),
              types.FeaturePath(["ff", "ff_fa"]),
          ],
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  from absl import flags
  from absl.testing import absltest
  from absl.testing import parameterized
  from tensorflow_data_validation import types
  from tensorflow_data_validation.utils import schema_util
  from google.protobuf import text_format
  from tensorflow_metadata.proto.v0 import schema_pb2
label_desc: Use image node_id 17 for calling the SchemaUtilTest obj's underlying member method code with example usage: obj.test_get_bytes_features() without return types