Ability to override _fnAjaxUpdateDraw?

I'm using server side data, but .net likes to return the data under the "d" property (ie, {d: {recordsTotal: 30, data: [...]}}). I see that I can use the 'dataSrc' property to specify how to get the data, but is there something similar for the other properties (recordsTotal, recordsFiltered, draw)?

I see that really nice _fnAjaxUpdateDraw function in the code. Is there any way that I can override it?