col_extents = atk_table_get_column_extent_at (table, row, column);
is_selected = atk_table_is_selected (table, row, column);
cell = atk_table_ref_at (table, row, column);
col_extents = atk_table_get_column_extent_at (table, row, column);
is_selected = atk_table_is_selected (table, row, column);
cell = atk_table_ref_at (table, row, column);