* Deletes a JmtCell component removing its data structure
* @param cell component to be eliminated
*/
public void deleteCell(JmtCell cell) {
JmodelStationDefinition sd = mediator.getStationDefinition();
sd.deleteStation(((CellComponent) cell.getUserObject()).getKey());
}
/**
* Calculate exact size of a <code>JmtCell</code> component before creating it.
* Will be used to avoid sovrapposition of nodes on the graph before placement.