Sets known metadata properties satisfying the specified predicate. The operation is recursive so it affects all nested packages as well. This method is a combination of AddPropertiesgroupdocs.metadata/metadata/addproperties and UpdatePropertiesgroupdocs.metadata/metadata/updateproperties. If an existing property satisfies the predicate its value is updated. If there is a known property missing in a package that satisfies the predicate it is added to the package....recursive so it affects all nested packages as well. This method is a...known property missing in a package that satisfies the predicate...