presto-spi/src/main/java/io/prestosql/spi/connector/classloader/ClassLoaderSafeConnectorMetadata.java/ClassLoaderSafeConnectorMetadata/createRole
class ClassLoaderSafeConnectorMetadata:    @Override
    public void createRole(ConnectorSession session, String role, Optional<PrestoPrincipal> grantor)
    {
        try (ThreadContextClassLoader ignored = new ThreadContextClassLoader(classLoader)) {
            delegate.createRole(session, role, grantor);
        }
    }