question: private void initializeParser ( JsonParser parser ) throws IOException { if ( wrapperKeys . isEmpty ( ) ) { return ; } boolean failed = true ; try { String match = parser . skipToKey ( wrapperKeys ) ; Preconditions . checkArgument ( match != null && parser . getCurrentToken ( ) != JsonToken . END_OBJECT , "wrapper key(s) not found: %s" , wrapperKeys ) ; failed = false ; } finally { if ( failed ) { parser . close ( ) ; } } }
target:  Initialize the parser to skip to wrapped keys (if any).