| FormativePropertiesTrait | Formative properties of outgoing edges. |
| SetterPropertiesTrait | Setter properties of outgoing edges. |
| CargoInterface | A descriptor interface for Cargo classes |
| AbstractEdgeCargo | An edge cargo class holds variables in regards to particle edges. |
| AbstractOutgoingEdgeCargo | An edge cargo class holds variables in regards to particle edges. |
| FieldsCargo | Fields Cargo |
| IncomingEdgeCargo | Holds variables in regards to incoming edges of a particle |
| OutgoingEdgeCargo | Holds variables in regards to outgoing edges of a particle |