qnames.addAll(createWrappedElements(seq));
//If it's extension
if (seq == null && type.getContentModel() != null) {
XmlSchemaContent xmlSchemaConent = type.getContentModel().getContent();
if (xmlSchemaConent instanceof XmlSchemaComplexContentExtension) {
XmlSchemaComplexContentExtension extension = (XmlSchemaComplexContentExtension)type
.getContentModel().getContent();
QName baseTypeName = extension.getBaseTypeName();
XmlSchemaType schemaType = schema.getTypeByQName(baseTypeName);