code: public void delete_property(final DeviceProxy deviceProxy,
                                  final String[] propertyNames) throws DevFailed {
          checkIfUseDb(deviceProxy, "delete_property()");
  
          if (deviceProxy.getDb_dev() == null) {
              deviceProxy.setDb_dev(new DbDevice(deviceProxy.devname, deviceProxy.url.host,
                  deviceProxy.url.strPort));
          }
          checkIfTango(deviceProxy, "delete_property");
          deviceProxy.getDb_dev().delete_property(propertyNames);
      }
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