extensions/markdown-language-features/src/preview/documentRenderer.ts/MdDocumentRenderer/_getImageStabilizerStyles
class MdDocumentRenderer:	private _getImageStabilizerStyles(state?: any) {
		let ret = '<style>\n';
		if (state && state.imageInfo) {
			state.imageInfo.forEach((imgInfo: any) => {
				ret += `#${imgInfo.id}.loading {
					height: ${imgInfo.height}px;
					width: ${imgInfo.width}px;
				}\n`;
			});
		}
		ret += '</style>\n';

		return ret;
	}