src/main/java/com/googlecode/objectify/impl/Keys.java
public <T> Key<T> createKeyAny(final Key<?> parent, final Class<T> kind, final Object id) {
		if (id instanceof String)
			return createKey(parent, kind, (String)id);
		else if (id instanceof Long)
			return createKey(parent, kind, (Long)id);
		else
			throw new IllegalArgumentException("id '" + id + "' must be String or Long");
	}
public <T> Key<T> createKeyAny(final Key<?> parent, final Class<T> kind, final Object id) {
		if (id instanceof String)
			return createKey(parent, kind, (String)id);
		else if (id instanceof Long)
			return createKey(parent, kind, (Long)id);
		else
			throw new IllegalArgumentException("id '" + id + "' must be String or Long");
	}
public < T > Key < T > createKeyAny ( final Key < ? > parent , final Class < T > kind , final Object id ) { if ( id instanceof String ) return createKey ( parent , kind , ( String ) id ) ; else if ( id instanceof Long ) return createKey ( parent , kind , ( Long ) id ) ; else throw new IllegalArgumentException ( "id '" + id + "' must be String or Long" ) ; }
Construct a Key<?> from a Long or String id
@param id must be either Long or String
Construct a Key<? > from a Long or String id