presto-spi/src/main/java/io/prestosql/spi/connector/classloader/ClassLoaderSafeConnectorMetadata.java/ClassLoaderSafeConnectorMetadata/metadataDelete
class ClassLoaderSafeConnectorMetadata:    @Override
    public OptionalLong metadataDelete(ConnectorSession session, ConnectorTableHandle tableHandle, ConnectorTableLayoutHandle tableLayoutHandle)
    {
        try (ThreadContextClassLoader ignored = new ThreadContextClassLoader(classLoader)) {
            return delegate.metadataDelete(session, tableHandle, tableLayoutHandle);
        }
    }