@class TRIAnyPersistedTask; @interface TRISequencePersistedTask : TRIPBMessage @property (retain, nonatomic) TRIAnyPersistedTask *task; @property (nonatomic) BOOL hasTask; @property (retain, nonatomic) TRIAnyPersistedTask *dependentTask; @property (nonatomic) BOOL hasDependentTask; + (id)descriptor; @end