public static @NotNull Collection<String> toAbsolute(final @NotNull VirtualFile root, @NotNull Collection<@NonNls String> relativePaths) {
    return ContainerUtil.map(relativePaths, s -> toAbsolute(root, s));
  }
public static @NotNull Collection<String> toAbsolute(final @NotNull VirtualFile root, @NotNull Collection<@NonNls String> relativePaths)