src/vs/workbench/services/workingCopy/common/storedFileWorkingCopy.ts/StoredFileWorkingCopy/doUpdateModel
class StoredFileWorkingCopy:	private async doUpdateModel(contents: VSBufferReadableStream): Promise<void> {
		this.trace('[stored file working copy] doUpdateModel()');

		// Update model value in a block that ignores content change events for dirty tracking
		this.ignoreDirtyOnModelContentChange = true;
		try {
			await this.model?.update(contents, CancellationToken.None);
		} finally {
			this.ignoreDirtyOnModelContentChange = false;
		}
	}