NamespaceDefinition def = ((NamespaceNode)iNode).getDefinition();
switch (SemanticUtils.getMultiDefinitionType(def, currentScope.getProject()))
{
case AMBIGUOUS:
currentScope.addProblem(new DuplicateNamespaceDefinitionProblem(iNode));
break;
case NONE:
break;
default:
assert false; // I don't think namespaces can have other type of multiple definitions