@Nullable
  private OpenFileDescriptor createDescriptor() {
    OpenFileDescriptor descriptor = null;
    VirtualFile file = VfsUtil.findFileByIoFile(myFilePosition.getFile(), false);
    if (file != null) {
      descriptor = new OpenFileDescriptor(myProject, file, myFilePosition.getStartLine(), myFilePosition.getStartColumn());
    }
    return descriptor;
  }
@Nullable
  private OpenFileDescriptor createDescriptor()