static const NSArray< id< NSObject>> **controllers = nil;

NSArray< id< BlockController>> *someMethod();

@interface Fraction : NSObject
	void Compute(
		Image< E::Matrix<SType, Dim,1>> const& src,
		Image<E::Matrix<TType,Dim,1>>& dst);
@end
@implementation SomeClass
- (void)initializeControllers:( NSArray< id< BlockController>> *)hybridContollers {
	if (index < children.count) {
		const unsigned int wl = w>>lvl;

		assert(x<0 && y>=3);
		assert(y <0&&z> 2);
		assert(a>>1);
		assert(b >>1);

		return static_cast< id <CKMountable>>(children[index]);
	}

	NSArray<id< BlockController>> *controllers = hybridContollers;
}
@end