class_docstr: Generic merge layer for elementwise merge functions.
  
  Used to implement `Sum`, `Average`, etc.
  
  Args:
      **kwargs: standard layer keyword arguments.
class_docstr_tok: ["Generic","merge","layer","for","elementwise","merge","functions",".","Used","to","implement","`","Sum","`",",","`","Average","`",",","etc",".","Args",":","*","*","kwargs",":","standard","layer","keyword","arguments","."]
code: def _merge_function(self, inputs):
      raise NotImplementedError
  
file_path: keras/keras/layers/merging/base_merge.py
imports: from keras import backend
  from keras import ops
  from keras.backend.common.keras_tensor import KerasTensor
  from keras.layers.layer import Layer
label_desc: Use image node_id 2 for calling the Merge obj's underlying member method code with example usage: obj._merge_function(inputs) without return types