code: def _ensure_at_least_1d(t):
      t = tf.convert_to_tensor(t)
      return t + tf.zeros([1], dtype=t.dtype)
  
imports: import collections
  import functools
  import tensorflow.compat.v2
  from tensorflow_probability.python.bijectors import bijector
  from tensorflow_probability.python.bijectors import softplus
  from tensorflow_probability.python.internal import assert_util
  from tensorflow_probability.python.internal import dtype_util
  from tensorflow_probability.python.internal import parameter_properties
  from tensorflow_probability.python.internal import tensor_util
  from tensorflow_probability.python.internal import tensorshape_util
label_desc: Use image node_id 1 for calling a global function with example usage: _ensure_at_least_1d(t) and returns: unknown