| class  | AbstractGeometricPrimitiveTypeImpl | An implementation of the model object 'Abstract Geometric Primitive Type'. | 
| class  | AbstractRingTypeImpl | An implementation of the model object 'Abstract Ring Type'. | 
| class  | AbstractSurfaceTypeImpl | An implementation of the model object 'Abstract Surface Type'. | 
| class  | EnvelopeTypeImpl | An implementation of the model object 'Envelope Type'. | 
| class  | EnvelopeWithTimePeriodTypeImpl | An implementation of the model object 'Envelope With Time Period Type'. | 
| class  | GridTypeImpl | An implementation of the model object 'Grid Type'. | 
| class  | LinearRingTypeImpl | An implementation of the model object 'Linear Ring Type'. | 
| class  | PointTypeImpl | An implementation of the model object 'Point Type'. | 
| class  | PolygonTypeImpl | An implementation of the model object 'Polygon Type'. | 
| class  | RectifiedGridTypeImpl | An implementation of the model object 'Rectified Grid Type'. |