public static CompressionPluginType getInstance() {
    if ( pluginType == null ) {
      pluginType = new CompressionPluginType();
    }
    return pluginType;
  }
@Test
  public void testGetInstance() {
    CompressionPluginType instance = CompressionPluginType.getInstance();
    CompressionPluginType instance2 = CompressionPluginType.getInstance();
    assertTrue( instance == instance2 );
    assertNotNull( instance );
    CompressionPluginType.pluginType = null;
    CompressionPluginType instance3 = CompressionPluginType.getInstance();
    assertFalse( instance == instance3 );
  }