code: public SDVariable localResponseNormalization(SDVariable input, LocalResponseNormalizationConfig lrnConfig) {
          LocalResponseNormalization lrn = LocalResponseNormalization.builder()
                  .inputFunctions(new SDVariable[]{input})
                  .sameDiff(sameDiff())
                  .config(lrnConfig)
                  .build();
  
          return lrn.outputVariable();
      }
docs: Local response normalization operation.
  
  @param input     the inputs to lrn
  @param lrnConfig the configuration
  @return