code: def test_unknown_shape(self):
      # https://github.com/tensorflow/probability/issues/1516
      if tf.executing_eagerly():
          self.skipTest("Graph-mode only")
      x = tf1.placeholder_with_default(
          tf.zeros((3, 1)), shape=[None, 1]
      )
      y_ref = tf.ones(10)
      self.batch_interp_regular_nd_grid_fn(
          x=x, x_ref_min=[0.0], x_ref_max=[1.0], y_ref=y_ref, axis=0
      )
  
imports: import numpy
  from scipy import interpolate
  import tensorflow.compat.v1
  import tensorflow.compat.v2
  from tensorflow_probability.python.internal import dtype_util
  from tensorflow_probability.python.internal import prefer_static
  from tensorflow_probability.python.internal import test_util
  from tensorflow_probability.python.math import gradient
  from tensorflow_probability.python.math import interpolation
label_desc: Use image node_id 11 for calling the BaseBatchInterpNDGridTest obj's underlying member method code with example usage: obj.test_unknown_shape() without return types