presto-spi/src/main/java/io/prestosql/spi/connector/classloader/ClassLoaderSafeConnectorAccessControl.java/ClassLoaderSafeConnectorAccessControl/checkCanDropRole
class ClassLoaderSafeConnectorAccessControl:    @Override
    public void checkCanDropRole(ConnectorSecurityContext context, String role)
    {
        try (ThreadContextClassLoader ignored = new ThreadContextClassLoader(classLoader)) {
            delegate.checkCanDropRole(context, role);
        }
    }