code: public @NotNull SuffixBuilder resource(@NotNull Resource resource, @NotNull Resource suffixBaseResource) {
      // get relative path to base resource
      String relativePath = getRelativePath(resource, suffixBaseResource);
      resourcePaths.add(relativePath);
      return this;
    }
docs: Puts a relative path of a resource into the suffix.
  @param resource the resource
  @param suffixBaseResource the base resource used to construct the relative path
  @return this