public Map<String, Variable> getVariables(ReadGraph graph, Variable context, String classification, Map<String, Variable> map) throws DatabaseException {
Map<String,Variable> all = getVariables(graph, context, null);
public Map<String, Variable> getVariables(ReadGraph graph, Variable context, String classification, Map<String, Variable> map) throws DatabaseException {
Map<String,Variable> all = getVariables(graph, context, null);