private boolean isCCCD(@Nullable final BluetoothGattDescriptor descriptor) {
		return descriptor != null &&
				BleManager.CLIENT_CHARACTERISTIC_CONFIG_DESCRIPTOR_UUID.equals(descriptor.getUuid());
	}
Returns true if this descriptor is a Client Characteristic Configuration descriptor (CCCD).

@param descriptor the descriptor to be checked
@return true if the descriptor is a CCCD
ble/src/main/java/no/nordicsemi/android/ble/BleManagerHandler.java