logical Default restapi = TRUE
indicates the provided URL components should be
specify Twitter's REST API. Set this to FALSE if you wish
to make a request URL designed for Twitter's streaming api.
query
Twitter's subsetting/topic identifiers.
Although the httr package refers to this as "path",
query is used here to maintain consistency with
Twitter API's excellent documentation.
param
Additional parameters (arguments) passed
along. If none, NULL (default).