cancelUpload method
Implementation
void cancelUpload(String uploadId) {
_cancelTokens[uploadId]?.cancel();
_cancelTokens.remove(uploadId);
_progressControllers[uploadId]?.close();
_progressControllers.remove(uploadId);
}
void cancelUpload(String uploadId) {
_cancelTokens[uploadId]?.cancel();
_cancelTokens.remove(uploadId);
_progressControllers[uploadId]?.close();
_progressControllers.remove(uploadId);
}