I'm looking for a way to copy the full path of any variable.
The expected result is to have this value in the clipboard:
com.myproject.Class1#variable1
You can use Copy Reference to get this:
com.myproject.Class1#getVariable1
When the cursor is placed over a variable you can access it via the context menu's Copy / Paste Special entry or simply use the shortcut Ctrl+Alt+Shift+C.
I think that's the best you can get.