presto-local-file/src/main/java/io/prestosql/plugin/localfile/LocalFileMetadata.java/LocalFileMetadata/getColumnHandles
class LocalFileMetadata:    @Override
    public Map<String, ColumnHandle> getColumnHandles(ConnectorSession session, ConnectorTableHandle table)
    {
        LocalFileTableHandle tableHandle = (LocalFileTableHandle) table;
        return getColumnHandles(tableHandle);
    }