invalidateCacheHeaders top-level constant
Implementation
const Map<String, String> invalidateCacheHeaders = {
'Content-Type': 'application/json; charset=UTF-8',
'Cache-Control': 'no-cache, no-store, max-age=0, must-revalidate',
'Pragma': 'no-cache',
'Expires': 'Mon, 01 Jan 1990 00:00:00 GMT',
};