if c.after == "*" && len(sorted) > 0 {
				if curIdx := getRIndex(sorted, c.name); curIdx == -1 {
					sorted = append(sorted, c.name)
				}
			} else if sortedIdx := getRIndex(sorted, c.after); sortedIdx != -1 {
				if curIdx := getRIndex(sorted, c.name); curIdx == -1 {
					// if after callback sorted, append current callback to last
					sorted = append(sorted, c.name)
				} else if curIdx < sortedIdx {