List
The list object contains Twitter Lists metadata describing the referenced List. The List object is the primary object returned in the List lookup endpoint. When requesting additional List fields on this endpoint, simply use the fields' parameter list.fields. At the moment, the List object cannot be found as a child object from any other data object. However, user objects can be found and expanded in the user resource. These objects are available for expansion by adding owner_id to the expansions query parameter. Use the expansion with the field parameter: list.fields when requesting additional fields to complete the primary List object and user.fields to complete the expansion object.