title: How to show Javadoc of a imported library when hovering on its methods and classes?
body: <p>As described in the title. We were currently using JSFML and Swing to develop a project, where I would like to view the Javadoc of JSFML in VSCode. However, when I tried to hover to show Javadoc it doesn't but throws me only a simple line.</p>
  <p>For example: I built a <code>renderWindow</code> by using one of JSFML's package, graphic (with class <code>RenderWindow</code>), and try to hover. It shows me this:</p>
  <pre><code>org.jsfml.graphics.RenderWindow.RenderWindow(VideoMode arg0, String arg1)
  </code></pre>
  <p>Instead of Javadoc of it. When I went into the definition, instead of Javadoc I saw such a comment at the head of its class file:</p>
  <pre><code> // Failed to get sources. Instead, stub sources have been generated by the disassembler.
   // Implementation of methods is unavailable.
  </code></pre>
  <p>How can I see the Javadoc of it in VSCode? Or I actually was not allowed to since it's restricted(?)</p>
  <p><a href="https://jsfml.sfmlprojects.org/" rel="nofollow noreferrer">Link for JSFML here if it helps:</a></p>