docs: @PublicEvolving
  	public <KS, OUT> SingleOutputStreamOperator<OUT> process(final KeyedBroadcastProcessFunction<KS, IN1, IN2, OUT> function) {
  
  		TypeInformation<OUT> outTypeInfo = TypeExtractor.getBinaryOperatorReturnType(
  				function,
  				KeyedBroadcastProcessFunction.class,
  				1,
  				2,
  				3,
  				TypeExtractor.NO_INDEX,
  				getType1(),
  				getType2(),
  				Utils.getCallLocationName(),
  				true);
  
  		return process(function, outTypeInfo);
  	}