.addTemplateHeaderReader(ignoredExistingHeadersManifestModifier) //
.addTemplateHeaderReader(placeholderManifestAndTemplateModifier) //
.addTemplateHeaderReader(partialManifestResolver);
contributors //
.setReadablePartialManifest(new StandardReadablePartialManifest());
contributors //
.setPartialManifestResolver(partialManifestResolver);
return contributors;