public long getQueryStartTime() {
        return queryStartTime;
    }
This is the start of the server's evaluation of a query
or request, after full reception of it through the network.
It will usually be intialized implicitly from the value
generated by the com.yahoo.search.Query constructor.

@return the starting time of query construction
container-core/src/main/java/com/yahoo/container/handler/Timing.java