code: static ConstantIntegerInfo make(ConstantPool cp, int value) {
          ConstantInfo ci = new ConstantIntegerInfo(value);
          return (ConstantIntegerInfo)cp.addConstant(ci);
      }
docs: Will return either a new ConstantIntegerInfo object or one already in
  the constant pool. If it is a new ConstantIntegerInfo, it will be
  inserted into the pool.