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