src/vs/workbench/api/common/extHostWebviewPanels.ts/ExtHostWebviewPanel/iconPath
class ExtHostWebviewPanel:	set iconPath(value: IconPath | undefined) {
		this.assertNotDisposed();
		if (this.#iconPath !== value) {
			this.#iconPath = value;

			this.#proxy.$setIconPath(this.#handle, URI.isUri(value) ? { light: value, dark: value } : value);
		}
	}