class_docstr: Test, multi-part bijector.
class_docstr_tok: ["Test",",","multi-part","bijector","."]
code: def forward_event_shape(self, x_shape, **kwargs):
      return [x_shape, x_shape]
  
imports: from absl.testing import parameterized
  from jax import config
  import numpy
  import tensorflow.compat.v2
  from fun_mc import backend
  from fun_mc import fun_mc_lib
  from fun_mc import test_util
  from fun_mc import util_tfp
label_desc: Use image node_id 4 for calling the DupBijector obj's underlying member method code with example usage: obj.forward_event_shape(x_shape) and returns: list