public CharacteristicsBuilder addCharacteristic(@NonNull UUID uuid,
                                                        @NonNull byte[] data,
                                                        BluetoothGattDescriptor... descriptors) {
            return addCharacteristic(uuid, data, 0, descriptors);
        }
Adds a {@link BluetoothGattCharacteristic} with specified parameters.

@param uuid        characteristic UUID
@param data        locally stored value of the characteristic
@param descriptors list of characteristic descriptors. Use {@link DescriptorsBuilder} to create them.
mockrxandroidble/src/main/java/com/polidea/rxandroidble2/mockrxandroidble/RxBleClientMock.java