/** Undefine the position property. */
public void undefinePosition() {
positionID.undefine();
}
/**
* Get the ID of position of this blockade.
*
* @return The position.
*/
@Override
public Road getPosition() {
return position == null
? position = (Road) standardModel().getEntity(positionID.getValue())
: position;
}
/**
* Find out if the position property has been defined.
*
* @return True if the position property has been defined, false otherwise.
*/
public boolean isPositionDefined() {
return positionID.isDefined();
}
/**
* Get the ID of position of this blockade.
*
* @return The position.
*/
public EntityID getPositionID() {
return positionID.getValue();
}