This example uses the cluster balloon layout "cluster#balloonAccordion".
The layout shows a list of geo objects, and when an item is clicked, information about the geo object is displayed.
Information about the selected geo object is set by a separate layout
and can be configured using the 'clusterBalloonItemContentLayout' option.
This example sets a custom layout with information about a geo object.
of objects can be created using the templateLayoutFactory factory
and text templates.
Text templates generate the HTML content of the layout from a data hash
passed to the layout constructor.
In this example, the data provider is the geo object.