| Class | Description | 
|---|---|
| AdvertisementData | The  AdvertisementDataclass represents the content of a Bluetooth advertisement data payload. | 
| AdvertisementFlags | The  AdvertisementFlagsclass enumerates the values for advertising data flags. | 
| DescriptorHelper | Provides constants and utility methods related to GATT descriptors. | 
| SecurityLevels | The  SecurityLevelsclass enumerates the values for security levels of GATT attributes. | 
| ServiceHelper | Provides utility methods related to GATT services. | 
| Exception | Description | 
|---|---|
| AttributeNotFoundException | Signals that the desired Bluetooth attribute could not be found. |