class_docstr: WFG8
  
  Args:
      n_arguments:
          The number of arguments.
      n_objectives:
          The number of objectives.
      k:
          The degree of the Pareto front.
class_docstr_tok: ["WFG8","Args",":","n_arguments",":","The","number","of","arguments",".","n_objectives",":","The","number","of","objectives",".","k",":","The","degree","of","the","Pareto","front","."]
code: def __call__(self, z: np.ndarray) -> np.ndarray:
      return self.wfg.__call__(z)
  
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 WFG8 obj's underlying member method code with example usage: obj.__call__(z) and returns: self