# Put implementation of methods of a class in `vtable`
	# * `vtable` : Pointer to the C-virtual table
	# * `mask` : perfect-hashing mask of the class corresponding to the vtable
	# * `id` : id of the target class
	# * `methods` : array of MMethodDef of the target class
	fun put_methods(vtable: Pointer, mask: Int, id: Int, methods: Array[MMethodDef])
		import Array[MMethodDef].length, Array[MMethodDef].[] `{

		// Get the area to fill with methods by a sequence of perfect hashing
		int hv = mask & id;
		long unsigned int *pointer = (long unsigned int*)(((long unsigned int *)vtable)[-hv]);

		// pointer+2 is the beginning of the area for methods implementation
		int length = Array_of_MMethodDef_length(methods);
		long unsigned int *area = (pointer + 2);
		int i;

		for(i=0; i<length; i++)
		{
			MMethodDef method = Array_of_MMethodDef__index(methods, i);
			area[i] = (long unsigned int)method;
			MMethodDef_incr_ref(method);
		}
	`}