SolrQueryResponse is used by a query handler to return
the response to a query request.
Note On Returnable Data...
A SolrQueryResponse may contain the following types of
Objects generated by the SolrRequestHandler that processed
the request.
Appends a named value to the list of named values to be returned.
Parameters: name - the name of the value - may be null if unnamed Parameters: val - the value to add - also may be null since null is a legal value See Also:Note on Returnable Data