private static Supplier<@NotNull @Nls String> getCommonAccessibleNameProvider(@NotNull List<? extends MergeableLineMarkerInfo<?>> infos) {
    return infos.get(0).getAccessibleNameProvider();
  }
private static Supplier<@NotNull @Nls String> getCommonAccessibleNameProvider(@NotNull List<? extends MergeableLineMarkerInfo<?>> infos)