code: def create_problem(self, seed: int) -> problem.Problem:
      return WFGProblem()
  
imports: from __future__ import annotations
  import math
  import sys
  import numpy
  import shape_functions
  import transformation_functions
  from kurobako import problem
label_desc: Use image node_id 2 for calling the WFGProblemFactory obj's underlying member method code with example usage: obj.create_problem(seed) and returns: WFGProblem