class_docstr: Type spec for `JointDistributionNamed`.
class_docstr_tok: ["Type","spec","for","`","JointDistributionNamed","`","."]
code: def value_type(self):
      return JointDistributionNamed
  
imports: import collections
  import functools
  import tensorflow.compat.v2
  from tensorflow_probability.python.distributions import joint_distribution_sequential
  from tensorflow_probability.python.internal import auto_composite_tensor
  from tensorflow_probability.python.internal import distribution_util
label_desc: Use image node_id 1 for calling the _JointDistributionNamedSpec obj's underlying member method code with example usage: obj.value_type() and returns: JointDistributionNamed