 infix operator <- {}
 
 // child contexts
-infix operator ~<> {}
-infix operator -<> {}
-infix operator -/<> {}
+infix operator <=> {}
+infix operator <-> {}
+infix operator </> {}
 
 /**
  Register a new child context with `.MainQueueConcurrencyType`

 ```
 
 */
public func ~<>(left: NSManagedObjectContext, right: String) -> NSManagedObjectContext {
  return Facade.stack.registerChildContextWithIdentifier(
    right,
    parentManagedObjectContext: left,
    concurrencyType: .PrivateQueueConcurrencyType)
}

/**

    object = left.objectWithID(right.objectID) as! A
  }
  return object
}