code: def _call(self, m: int, x: np.ndarray) -> float:
      if m == 1:
          return (
              1
              - np.cos(
                  x * np.pi / 2,
              )
          )[:-1].prod()
  
      if m == self.n_objectives:
          return 1 - np.sin(x[0] * np.pi / 2.0)
  
      return (1.0 - np.cos(x * np.pi / 2.0))[
          : self.n_objectives - m
      ].prod() * (1.0 - np.sin(x[self.n_objectives - m] * np.pi / 2.0))
  
imports: import abc
  import numpy
label_desc: Use image node_id 1 for calling the ConvexShapeFunction obj's underlying member method code with example usage: obj._call(m, x) and returns: unknown, unknown, unknown