grow

        fn grow(self: *Self, allocator: Allocator, new_capacity: Size, ctx: Context) Allocator.Error!void {
            @branchHint(.cold);
            const new_cap = @max(new_capacity, minimal_capacity);
            assert(new_cap > self.capacity());
            assert(std.math.isPowerOfTwo(new_cap));

            var map: Self = .{};
            try map.allocate(allocator, new_cap);
            errdefer comptime unreachable;
            map.pointer_stability.lock();
            map.initMetadatas();
            map.available = @truncate((new_cap * max_load_percentage) / 100);

            if (self.size != 0) {
                const old_capacity = self.capacity();
                for (
                    self.metadata.?[0..old_capacity],
                    self.keys()[0..old_capacity],
                    self.values()[0..old_capacity],
                ) |m, k, v| {
                    if (!m.isUsed()) continue;
                    map.putAssumeCapacityNoClobberContext(k, v, ctx);
                    if (map.size == self.size) break;
                }
            }

            self.size = 0;
            self.pointer_stability = .{};
            std.mem.swap(Self, self, &map);
            map.deinit(allocator);
        }