To delete a single entity in the default context:
// Objective-C
[myPerson MR_deleteEntity];
// Swift
myPerson.mr_deleteEntity()
To delete the entity from a specific context:
// Objective-C
[myPerson MR_deleteEntityInContext:otherContext];
// Swift
myPerson.mr_deleteEntity(in: otherContext)
To truncate all entities from the default context:
// Objective-C
[Person MR_truncateAll];
// Swift
Person.mr_truncateAll()
To truncate all entities in a specific context:
// Objective-C
[Person MR_truncateAllInContext:otherContext];
// Swift
Person.mr_truncateAll(in: otherContext)