getErrorTypeName() Returns a String that contains the name of the error type.
getResult() Returns an object that contains the results of the batch operation. The object is typed according to the batch method. For example, if you call getMembershipBatch(), a successful call to BatchResult getResult() returns a ConnectApi.GroupMembership object.
isSuccess() Returns a Boolean that is set to true if the batch operation was successful for this object, false otherwise.