Is there a way that I can disable sorting (prevent the user from clicking on the column header to change how the data has been sorted) when I've set a sort model to auto sort the data in an ascending order via the gridApi?

My understanding is that the grid api events occur asynchronously, so invoking this.gridApi.setColumnDefs() after this.gridApi.setSortModel() won't do the trick (i've tried this and it ends up disabling sorting but also removing my sort model upon grid loading.)