code: def linear(x):
      """Linear.
  
      f(x) = x
  
      Arguments:
          x : A `Tensor` with type `float`, `double`, `int32`, `int64`, `uint8`,
              `int16`, or `int8`.
  
      Returns:
          The incoming Tensor (without changes).
      """
      return x
  
imports: from __future__ import division, print_function, absolute_import
  import tensorflow.compat.v1
  import numpy
  import tflearn
  from .None import initializations
  from .None import variables
  from .utils import get_from_module
label_desc: Use image node_id 2 for calling a global function with example usage: linear(x) and returns: x