code: def forward(self, d1, d2, d3, d4):
      binary_op = self.__class__.binary_op_pt_func
      unary_op = self.__class__.unary_op_pt_func
      return self._eval(d1, d2, d3, d4, binary_op, unary_op)
  
imports: import itertools
  import operator
  import numpy
  import scipy.special
  import torch
  from .None import benchmark
label_desc: Use image node_id 3 for calling the ElementBench obj's underlying member method code with example usage: obj.forward(d1, d2, d3, d4) and returns: self