for (DataSchemaNode c : input.getChildNodes()) {
for (UnknownSchemaNode extension : c.getUnknownSchemaNodes()) {
if (CONTEXT_REFERENCE.equals(extension.getNodeType())) {
for (DataSchemaNode c : input.getChildNodes()) {
for (UnknownSchemaNode extension : c.getUnknownSchemaNodes()) {
if (CONTEXT_REFERENCE.equals(extension.getNodeType())) {