http2/compat: undocumented public property "complete"

[ronag]

The Http2ServerRequest has an undocumented public property "complete".

I guess it should be either be documented or made private? What is it's purpose? Should we add it to http/1?

  get complete() {
    return this._readableState.ended ||
           this[kState].closed ||
           this[kStream].destroyed;
  }

I'm not sure where this property is useful over just checking this[kState].closed? Seems like some kind of hybrid property of streams being closed and the old http/1 finished semantics.

I guess it is true if end() has been called OR 'close' has been emitted?