assertFalse( ioService().exists( file ) );
String content = "sample content";
ioService.write( file, content );
assertTrue( ioService().exists( file ) );
final SeekableByteChannel sbc = ioService().newByteChannel( file, StandardOpenOption.READ );
String readContent = readSbc( sbc );
assertEquals( content, readContent );
ioService().delete( file );