code: public void delete_attribute_property(final DeviceProxy deviceProxy,
                                            final DbAttribute attr) throws DevFailed {
          checkIfUseDb(deviceProxy, "delete_attribute_property()");
  
          if (deviceProxy.getDb_dev() == null) {
              deviceProxy.setDb_dev(new DbDevice(deviceProxy.devname, deviceProxy.url.host,
                  deviceProxy.url.strPort));
          }
          checkIfTango(deviceProxy, "delete_attribute_property");
          deviceProxy.getDb_dev().delete_attribute_property(attr);
      }
docs: ==========================================================================