extrude

Boolean value. Specifies whether to connect the LinearRing to the ground. To extrude this geometry, the altitude mode must be either AltitudeMode.relativeToGround, AltitudeMode.relativeToSeaFloor, or AltitudeMode.absolute. Only the vertices of the LinearRing are extruded, not the center of the geometry. The vertices are extruded toward the center of the Earth's sphere.