@Override
  public InputSource resolveEntity(final String publicId, final String systemId)
      throws SAXException, IOException {
    return resolveEntity(null, publicId, null, systemId);
  }
Default behavior for EntityResolver2 implementations.
<p>
UnitTest PivotalEntityResolverJUnitTest and DefaultEntityResolver2Test

@since GemFire 8.1
geode-core/src/main/java/org/apache/geode/internal/cache/xmlcache/DefaultEntityResolver2.java