public void setProperty(String key, Object value) {
    setProperty(splitKey(key), value);
  }
@Test
  public void testSerDer() {
    runSerDer(()->{
      // update main (no commit yet)
      manager.setProperty("framework", "llap");
      manager.setProperty("ser.store", "Parquet");
      manager.setProperty("ser.der.id", 42);
      manager.setProperty("ser.der.name", "serder");
      manager.setProperty("ser.der.project", "Metastore");
      return true;
    });
  }