src/vs/workbench/contrib/notebook/browser/view/renderers/cellContextKeys.ts/CellContextKeyManager/onDidChangeState
class CellContextKeyManager:	private onDidChangeState(e: CellViewModelStateChangeEvent) {
		this.contextKeyService.bufferChangeEvents(() => {
			if (e.internalMetadataChanged) {
				this.updateForInternalMetadata();
			}

			if (e.editStateChanged) {
				this.updateForEditState();
			}

			if (e.focusModeChanged) {
				this.updateForFocusState();
			}

			if (e.cellLineNumberChanged) {
				this.cellLineNumbers.set(this.element.lineNumbers);
			}

			// if (e.collapseStateChanged) {
			// 	this.updateForCollapseState();
			// }
		});
	}