public XSDSchema locateSchema(XSDSchema xsdSchema, String namespaceURI,
String rawSchemaLocationURI, String resolvedSchemaLocationURI) {
for (int i = 0; i < locators.size(); i++) {
XSDSchemaLocator locator = (XSDSchemaLocator) locators.get(i);
XSDSchema schema = locator.locateSchema(xsdSchema, namespaceURI,
rawSchemaLocationURI, resolvedSchemaLocationURI);
if (schema != null) {
return schema;
}