@Nullable public File resolveParentDirectory(@Nullable Label label){
  return label != null ? resolveParentDirectory(label.blazePackage(),label.ruleName()) : null;
}

@ Nullable public File resolveParentDirectory ( @ Nullable Label label ) { return label != null ? resolveParentDirectory ( label . blazePackage ( ) , label . ruleName ( ) ) : null ; }
for files references , returns the parent directory . < br > for rule references , return the blaze package directory .
