class_docstr: Forward and inverse are not inverses of each other.
code: def _forward(self, x):
      if self._forward_missing:
          raise IntentionallyMissingError
      return 2 * x
  
imports: import abc
  import numpy
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops.distributions import bijector
  from tensorflow.python.platform import test
label_desc: Use image node_id 2 for calling the BrokenBijector obj's underlying member method code with example usage: obj._forward(x) and returns: unknown