title: Cannot debug into the code
body: <p>in one line of my solution which is made of a couple of projects I want to debug one line of code, something like this:  </p>
  
  <pre><code>mThisLibrary.DoSthMethod();
  </code></pre>
  
  <p>but when I put my break point on that line and press F11, the debugger says that "There is no source code available" so I cannot get into it deeper. BUT the source code is there so for example if I click F12 on the method name, I can go to its implementation easily. I am not sure why the debugger cannot get inside that method.</p>
  
  <p>Any ideas?</p>