class_docstr: An AF class, inherited from Optimizer.
  
  This is the designed class to define AF-related
  variables and methods.
  
  References:
      L. Cheng, W. Xue-han and Y. Wang. Artificial flora (AF) optimization algorithm.
      Applied Sciences (2018).
docstr: Amount of branches.
docstr_tok: ["Amount","of","branches","."]
code: def m(self) -> int:
      """Amount of branches."""
  
      return self._m
  
imports: import copy
  from typing import Any, Dict, Optional
  import numpy
  import opytimizer.math.distribution
  import opytimizer.math.random
  import opytimizer.utils.exception
  from opytimizer.core import Optimizer
  from opytimizer.core.function import Function
  from opytimizer.core.space import Space
  from opytimizer.utils import logging
label_desc: Use image node_id 6 for calling the AF obj's underlying member method code with example usage: obj.m() and returns: self