code: public static DefaultFileSet.Builder with(BaseFolder baseFolder, AnnotatedFile manifest, String manifestPath) {
  		return new Builder(baseFolder, manifest, manifestPath);
  	}
docs: Creates a new builder with the specified base folder and manifest.
  @param baseFolder the base folder
  @param manifest the manifest
  @param manifestPath the path to the manifest within the file set
  @return returns a new builder
  @throws IllegalArgumentException if the manifest isn't a descendant of the base folder