The field expansion feature of GraphAPI can be efficiently used through the 'fields' parameter of the get_connections method. This means that the user can obtain info from both the referenced edge in 'connection_name', and the node that is connected to 'object_id' through said edge. Doing so is very useful, as it can reduce the amount of calls to the API, and help the user access richer data through a simpler query. This information is not intuitively acquired from either the Facebook SDK for Python docs, or the GraphAPI reference guide.