question: public JettySolrRunner startJettySolrRunner ( String hostContext , SortedMap < ServletHolder , String > extraServlets , SortedMap < Class , String > extraRequestFilters ) throws Exception { String context = getHostContextSuitableForServletContext ( hostContext ) ; JettySolrRunner jetty = new JettySolrRunner ( testDir . getAbsolutePath ( ) , context , 0 , null , null , true , extraServlets , null , extraRequestFilters ) ; jetty . start ( ) ; jettys . add ( jetty ) ; return jetty ; }
target:  Start a new Solr instance