code: def __call__(self, y: float) -> float:
      a = self._a
      b = self._b
      c = self._c
  
      q1 = np.fabs(y - c) / (2 * (np.floor(c - y) + c))
      q2 = (4 * a + 2) * np.pi * (0.5 - q1)
      return (1.0 + np.cos(q2) + 4 * b * (q1**2)) / (b + 2)
  
imports: from __future__ import annotations
  import abc
  from typing import Callable
  from typing import Union
  import numpy
label_desc: Use image node_id 2 for calling the MultiModalShiftTransformation obj's underlying member method code with example usage: obj.__call__(y) and returns: unknown