code: def __call__(
      self,
      X: TensorType,
      X2: Optional[TensorType] = None,
      *,
      full_cov: bool = True,
      presliced: bool = False,
  ) -> tf.Tensor:
      return self._reduce(
          [
              k(X, X2, full_cov=full_cov, presliced=presliced)
              for k in self.kernels
          ]
      )
  
imports: import abc
  from functools import partial, reduce
  from typing import Callable, List, Optional, Sequence, Tuple, Union, overload
  import numpy
  import tensorflow
  from check_shapes import check_shapes
  from ..base import AnyNDArray, Module, TensorType
label_desc: Use image node_id 1 for calling the ReducingCombination obj's underlying member method code with example usage: obj.__call__(X, X2) and returns: self