@Nullable
    private String getRelativePath() {
      final VirtualFile virtualFile = myFile.getVirtualFile();
      LOG.assertTrue(virtualFile != null);
      for (FileReferenceHelper helper : myHelpers) {
        PsiFileSystemItem root = helper.findRoot(myFile.getProject(), virtualFile);
        String path = PsiFileSystemItemUtil.findRelativePath(root, helper.getPsiFileSystemItem(myFile.getProject(), virtualFile));
        if (path != null) return path;
      }
      return null;
    }
@Nullable
    private String getRelativePath()