SandboxedSdkProvider.InitSdkCallback Callback for tracking the status of initializing the SDK. 
SdkSandboxManager.RemoteSdkCallback A callback for tracking events regarding loading and interacting with SDKs. 


SandboxedSdkContext Refers to the context of the SDK loaded in the SDK sandbox process. 
SandboxedSdkProvider Encapsulates API which SDK sandbox can use to interact with SDKs loaded into it. 
SdkSandboxManager Provides APIs to load SDKs into SDK sandbox process, and then interact with them.