static @Nullable String expandEclipseRelative2OtherModule(final @NotNull Module otherModule, final @Nullable String relativeToOtherModule) {
    final VirtualFile[] contentRoots = ModuleRootManager.getInstance(otherModule).getContentRoots();
    for (VirtualFile contentRoot : contentRoots) {
      if (relativeToOtherModule == null) {
        return contentRoot.getUrl();
      }
      final VirtualFile fileUnderModuleContentRoot = contentRoot.findFileByRelativePath(relativeToOtherModule);
      if (fileUnderModuleContentRoot != null) {
        return fileUnderModuleContentRoot.getUrl();
      }
    }
    return null;
  }
static @Nullable String expandEclipseRelative2OtherModule(final @NotNull Module otherModule, final @Nullable String relativeToOtherModule)