ESearch Question

I'm trying to create a filter on the esearch fixed datagrid. The filter is using an array collection. I have everything working correctly but I can't seem to find the dataprovider that is populating the results datagrid. Here is my code in the SearchWidgetFixedDataGrid.mxml:

<components:SearchBar searchListCollection="{}" dataGrid="{resultsGrid}" />

Does anybody know where the dataprovider variable is located?

Thanks