func fromContext(ctx netcontext.Context) appengine.Context {
	c, _ := ctx.Value(&contextKey).(appengine.Context)
	return c
}
func fromContext(ctx netcontext.Context) appengine.Context {
	c, _ := ctx.Value(&contextKey).(appengine.Context)
	return c
}
func fromContext ( ctx netcontext . Context ) appengine . Context { c , _ := ctx . Value ( & contextKey ) . ( appengine . Context ) return c }
// fromContext returns the App Engine context or nil if ctx is not
// derived from an App Engine context.
fromContext returns the App Engine context or nil if ctx is not derived from an App Engine context .