Multiselect dropdown list for aggrid column

[xliyuan]

Hi,

Nowadays, single select drop down is available through cellEditor='agSelectCellEditor' in configure_column. How about multi selection dropdown list?
Moreover, there were choices of tag_a and tag_b, but no tag_c at the first moment in the dropdown list. So I can create tag_c directly from the input area and get selected.

Thanks!