java.lang.String key
java.util.function.Supplier<T> _keySupplier
java.lang.String languageId
java.util.function.Supplier<T> _languageIdSupplier
java.lang.String value
java.util.function.Supplier<T> _valueSupplier
java.lang.String xClassName
java.util.Map<K,V> _extendedProperties