public static FileSystem get(URI uri) throws IOException {
        return new ForStFlinkFileSystem(FileSystem.get(uri));
    }
@Test
    void testReadAndWriteWithByteBuffer() throws Exception {
        ForStFlinkFileSystem fileSystem =
                (ForStFlinkFileSystem) ForStFlinkFileSystem.get(new URI(tempDir.toString()));
        testReadAndWriteWithByteBuffer(fileSystem);
    }