class_docstr: Class to track uninitialized lazy variables.
class_docstr_tok: ["Class","to","track","uninitialized","lazy","variables","."]
code: def add_uninitialized_var(self, var):
      self._uninitialized_var_list.append(var)
  
imports: import contextlib
  from tensorflow.python.distribute import packed_distributed_variable
  from tensorflow.python.eager import context
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import ops
  from tensorflow.python.ops import resource_variable_ops
  from tensorflow.python.tpu import tpu_replication
label_desc: Use image node_id 3 for calling the LazyVariableTracker obj's underlying member method code with example usage: obj.add_uninitialized_var(var) without return types