@Nullable
  public UsageView showUsages(UsageInfo @NotNull [] usages, @NotNull UsageViewPresentation presentation, @NotNull UsageViewManager manager, PsiElement @NotNull [] elements) {
    return null;
  }
@Nullable
  public UsageView showUsages(UsageInfo @NotNull [] usages, @NotNull UsageViewPresentation presentation, @NotNull UsageViewManager manager, PsiElement @NotNull [] elements)