Qa\SoftMocks::rewriteContents PHP Method

    private static function rewriteContents($orig_file, $target_file, $contents)
    {
        $traverser = new \PhpParser\NodeTraverser();
        $traverser->addVisitor(new SoftMocksTraverser($orig_file));
        $prettyPrinter = new SoftMocksPrinter();
        $parser = (new \PhpParser\ParserFactory())->create(\PhpParser\ParserFactory::PREFER_PHP7);
        $stmts = $parser->parse($contents);
        $stmts = $traverser->traverse($stmts);
        return $prettyPrinter->prettyPrintFile($stmts);
    }