class_docstr: Abstract class of solver.
class_docstr_tok: ["Abstract","class","of","solver","."]
docstr: Get the learning rate.
docstr_tok: ["Get","the","learning","rate","."]
code: def get_learning_rate(self):
      """Get the learning rate."""
      raise NotImplementedError()
  
imports: import abc
  import math
  import delta.compat
  import tensorflow_addons
  from absl import logging
  from delta import utils
  from delta.utils import optimizer
  from delta.utils.register import registers
label_desc: Use image node_id 5 for calling the ABCSolver obj's underlying member method code with example usage: obj.get_learning_rate() without return types