Gets context for describing the operation.
In BuildMaster, this is IBuildMasterContext, and can be passed into methods like Inedo.SDK.GetRaftItems(Inedo.Extensibility.RaftRepositories.RaftItemType,System.Object) and Inedo.SDK.GetRaftItem(Inedo.Extensibility.RaftRepositories.RaftItemType,System.String,System.Object) as needed to resolve application-level rafts.