src/vs/workbench/contrib/notebook/browser/view/cellParts/codeCell.ts/CodeCell/_removeInputCollapsePreview
class CodeCell:	private _removeInputCollapsePreview() {
		const children = this.templateData.cellInputCollapsedContainer.children;
		const elements = [];
		for (let i = 0; i < children.length; i++) {
			if (children[i].classList.contains('cell-collapse-preview')) {
				elements.push(children[i]);
			}
		}

		elements.forEach(element => {
			element.parentElement?.removeChild(element);
		});
	}