class_docstr: A single layer for shift.
class_docstr_tok: ["A","single","layer","for","shift","."]
code: def encrypt_character(self, character):
      return self.encrypt[character]
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from collections import deque
  import numpy
  from tensor2tensor.data_generators import algorithmic
  from tensor2tensor.utils import registry
label_desc: Use image node_id 2 for calling the ShiftEncryptionLayer obj's underlying member method code with example usage: obj.encrypt_character(character) and returns: self