Get ag-grid instance by container div Id

I know that in order to generate a new ag-Grid we can do the following:

    new agGrid.Grid(gridDiv, gridOptions);

Where gridDiv is the "container div" of the ag-grid and gridOptions , the options of the grid.

Is it possible to fetch the grid instance given that I have its "container div" Id? I basically want to access its gridOptions / gridOptions.api

from Get ag-grid instance by container div Id