class_docstr: Type specification for `None` value.
code: def from_value(value):
      return NoneTensorSpec()
  
imports: from tensorflow.python.framework import composite_tensor
  from tensorflow.python.framework import type_spec
  from tensorflow.python.framework import type_spec_registry
label_desc: Use image node_id 7 for calling the NoneTensorSpec obj's underlying member method code with example usage: obj.from_value(value) and returns: NoneTensorSpec