golang.org/x/net/http2.sortPriorityNodeSiblingsRFC7540.Swap (method, view implemented interface methods)

one use

	golang.org/x/net/http2 (current package)
		writesched_priority_rfc7540.go#L183: func (z sortPriorityNodeSiblingsRFC7540) Swap(i, k int) { z[i], z[k] = z[k], z[i] }