/**
* Helper method that can be used to dynamically figure out enumeration type of given {@link
* EnumSet}, without having access to its declaration. Code is needed to work around design flaw
* in JDK.
*
* @since 1.5
*/
public static Class<? extends Enum<?>> findEnumType(EnumMap<?, ?> m) {
if (!m.isEmpty()) {
return findEnumType(m.keySet().iterator().next());
}
// Otherwise need to locate using an internal field
return EnumTypeLocator.instance.enumTypeFor(m);
}
