extensions/media-preview/src/mediaPreview.ts/MediaPreview/render
class MediaPreview:	protected async render() {
		if (this.previewState === PreviewState.Disposed) {
			return;
		}

		const content = await this.getWebviewContents();
		if (this.previewState as PreviewState === PreviewState.Disposed) {
			return;
		}

		this.webviewEditor.webview.html = content;
	}