public class EquationManager {
private static Logger LOG = Logger.getLogger(EquationManager.class);
private static EquationManager ourInstance = new EquationManager();
private EquationManager() {
}
<BUG>private Map<SNode, Set<SNode>> mySubtypesToSupertypesMap = new HashMap<SNode, Set<SNode>>();

private Map<SNode, Set<SNode>> mySupertypesToSubtypesMap = new HashMap<SNode, Set<SNode>>();
</BUG>
private Map<SNode, SNode> myEquations = new HashMap<SNode, SNode>();

public class EquationManager {
private static Logger LOG = Logger.getLogger(EquationManager.class);
private static EquationManager ourInstance = new EquationManager();
private EquationManager() {
}
private Map<SNode, Map<SNode,SNode>> mySubtypesToSupertypesMap = new HashMap<SNode, Map<SNode, SNode>>();
private Map<SNode, Map<SNode, SNode>> mySupertypesToSubtypesMap = new HashMap<SNode, Map<SNode, SNode>>();
private Map<SNode, SNode> myEquations = new HashMap<SNode, SNode>();
