Do a REST request.

Ensures request arguments are a request object (for consistency).

Ensures a REST response is a response object (for consistency).

Parses a date into both its local and UTC equivalent, in MySQL datetime format.

Retrieves the URL prefix for any API resource.

Handles _deprecated_argument() errors.

Handles _deprecated_function() errors.

Handles OPTIONS requests for the server.

Sends a Link header for the REST API.

Outputs the REST API link tag into page header.