If TRUE, output of function will be a list of two
elements: a data frame with user's checkins and a list of data frames,
where each element contains information about users tagged in each checkin.
api
API version. e.g. "v2.8". NULL is the default.
Details
This function requires the use of an OAuth token with the following
permissions: user_status, user_checkins, friends_status, friends_checkins
Check-in search was deprecated with version 2.0 of the Facebook Graph API.