import tensorflow as tf

          'bar': tf.convert_to_tensor([0, 2, 0, 2]),
      }
      boundaries_foo = tf.expand_dims(tf.convert_to_tensor([.5, 1.5]), axis=0)
      boundaries_bar = tf.expand_dims(tf.convert_to_tensor([.1, .2]), axis=0)
      outputs = {}

