code: def testHashStringsNoKeyRaggedInput(self):
      strings = tf.RaggedTensor.from_row_splits(
          values=["Dog", "Cat", ""], row_splits=[0, 1, 1, 1, 1, 3]
      )
      hash_buckets = 17
      expected_hashed_strings = tf.RaggedTensor.from_row_splits(
          values=[12, 4, 11], row_splits=[0, 1, 1, 1, 1, 3]
      )
      hashed_strings = mappers.hash_strings(strings, hash_buckets)
      self.assertAllEqual(expected_hashed_strings, hashed_strings)
  
imports: import numpy
  import tensorflow
  from tensorflow_transform import mappers
  from tensorflow_transform import test_case
label_desc: Use image node_id 28 for calling the MappersTest obj's underlying member method code with example usage: obj.testHashStringsNoKeyRaggedInput() without return types