question: @ Override public final K acquire ( ) { K ctx = null ; final Reference < K > ref = ctxTL . get ( ) ; if ( ref != null ) { ctx = ref . get ( ) ; } if ( ctx == null ) { ctx = newContext ( ) ; ctxTL . set ( getOrCreateReference ( ctx ) ) ; } if ( ctx . usage == USAGE_TL_INACTIVE ) { ctx . usage = USAGE_TL_IN_USE ; } else { ctx = ctxProviderCLQ . acquire ( ) ; } return ctx ; }
target:  Give a ReentrantContext instance for the current thread