How can one convert a Polygon to LinearRing geometry using OpenLayers? I'm thinking that I can do this by getting bounds of the polygon, then use this to construct a Points array. Finally, use OpenLayers.Geometry.LinearRing(Points_Array) constructor to create the LinearRing. My attempts so far have flopped. Any code samples on how to achieve this will be highly appreciated.
UPDATE: I've accepted @drnexgis' answer for what it taught me on converting geometry to GML format. It only partially answered the question, but it was helpful.