add
Serializes the given value into an equivalent JsonObject using a serializer retrieved from reified type parameter and adds it as a new item to the end of the SyncList.
Type T must be annotated with @Serializable.
Return
SyncList.Item which has been added.
Parameters
item
Item data to add.
Throws
Serialization
If the itemData cannot be serialized to JSON object.
Twilio
When error occurred while adding the item.