buildHeaders method
Build provider-specific HTTP headers
Implementation
@override
Map<String, String> buildHeaders(dynamic config) {
  // Google uses query parameter authentication, so minimal headers
  return {'Content-Type': 'application/json'};
}Build provider-specific HTTP headers
@override
Map<String, String> buildHeaders(dynamic config) {
  // Google uses query parameter authentication, so minimal headers
  return {'Content-Type': 'application/json'};
}