src/vs/editor/browser/viewParts/viewCursors/viewCursors.ts/ViewCursors/render
class ViewCursors:	public render(ctx: RestrictedRenderingContext): void {
		const renderData: IViewCursorRenderData[] = [];
		let renderDataLen = 0;

		const primaryRenderData = this._primaryCursor.render(ctx);
		if (primaryRenderData) {
			renderData[renderDataLen++] = primaryRenderData;
		}

		for (let i = 0, len = this._secondaryCursors.length; i < len; i++) {
			const secondaryRenderData = this._secondaryCursors[i].render(ctx);
			if (secondaryRenderData) {
				renderData[renderDataLen++] = secondaryRenderData;
			}
		}

		this._renderData = renderData;
	}