presto-main/src/main/java/io/prestosql/operator/scalar/ConcatFunction.java/ConcatFunction/generateCheckedAdd
class ConcatFunction:    private static BytecodeExpression generateCheckedAdd(BytecodeExpression x, BytecodeExpression y)
    {
        return invokeStatic(ConcatFunction.class, "checkedAdd", int.class, x, y);
    }