如何在JAVADOC注释中使用变量?

I wish to refer to a particular URL in JAVADOC comments in a project. However, I know that the URL may change in the near future. So, I was looking for a functionality that allows one to use a single variable in place of this URL throughout the project. So that if needed, it can easily be changed, but I could not find one. I wish to refer to a particular URL in JAVADOC