| filterToken | The identifier of the filter. Typically what precedes the operator in a filter (for example, "id" in "id>=2"). |
| transformer | The transformer function. |
Sets a filter's nested query transformer function. This function takes the result of a nested query and extracts the necessary data to compare with the filter.
<typeparam name="TNestedQueryData">The type of data returned by the nested query.</typeparam> <typeparam name="TRhs">The type expected on the right-hand side of the filter.</typeparam>