src/main/java/com/googlecode/objectify/impl/Keys.java
@SuppressWarnings("unchecked")
	public <T> Key<T> anythingToKey(final Object keyOrEntity) {

		if (keyOrEntity instanceof Key<?>)
			return (Key<T>)keyOrEntity;
		else if (keyOrEntity instanceof com.google.cloud.datastore.Key)
			return Key.create((com.google.cloud.datastore.Key)keyOrEntity);
		else if (keyOrEntity instanceof Ref)
			return ((Ref<T>)keyOrEntity).key();
		else if (keyOrEntity instanceof FullEntity<?>)
			return Key.create(getKey((FullEntity<?>)keyOrEntity));
		else
			return keyOf((T)keyOrEntity);
	}
@SuppressWarnings("unchecked")
	public <T> Key<T> anythingToKey(final Object keyOrEntity) {

		if (keyOrEntity instanceof Key<?>)
			return (Key<T>)keyOrEntity;
		else if (keyOrEntity instanceof com.google.cloud.datastore.Key)
			return Key.create((com.google.cloud.datastore.Key)keyOrEntity);
		else if (keyOrEntity instanceof Ref)
			return ((Ref<T>)keyOrEntity).key();
		else if (keyOrEntity instanceof FullEntity<?>)
			return Key.create(getKey((FullEntity<?>)keyOrEntity));
		else
			return keyOf((T)keyOrEntity);
	}
@ SuppressWarnings ( "unchecked" ) public < T > Key < T > anythingToKey ( final Object keyOrEntity ) { if ( keyOrEntity instanceof Key < ? > ) return ( Key < T > ) keyOrEntity ; else if ( keyOrEntity instanceof com . google . cloud . datastore . Key ) return Key . create ( ( com . google . cloud . datastore . Key ) keyOrEntity ) ; else if ( keyOrEntity instanceof Ref ) return ( ( Ref < T > ) keyOrEntity ) . key ( ) ; else if ( keyOrEntity instanceof FullEntity < ? > ) return Key . create ( getKey ( ( FullEntity < ? > ) keyOrEntity ) ) ; else return keyOf ( ( T ) keyOrEntity ) ; }
<p>Gets the Key<T> given an object that might be a Key, Key<T>, or entity.</p>

@param keyOrEntity must be a Key, Key<T>, or registered entity.
@throws NullPointerException if keyOrEntity is null
@throws IllegalArgumentException if keyOrEntity is not a Key, Key<T>, or registered entity
<p > Gets the Key<T > given an object that might be a Key Key<T > or entity . < / p >