### Question:
DecisionMetadataEngine extends CommonsMetadataEngine<IStratioStreamingAPI> { @Override protected void dropIndex(IndexMetadata indexMetadata, Connection<IStratioStreamingAPI> connection) throws UnsupportedException, ExecutionException { throw new UnsupportedException("Drop Index not supported in Decision connector"); } DecisionMetadataEngine(ConnectionHandler connectionHandler);   }### Answer:
@Test(expected = UnsupportedException.class) public void dropIndexTest() throws Exception { decisionMetadataEngine.dropIndex(null, (Connection) null); }