``` // BE publicProcedure.input(z.object({shouldPopulateRelation: z.boolean()})).query(({ input, ctx }) => { return ctx.db.thing.findMany({ include: input.shouldPopulateRealtion }) }) // FE const {data} = api.thing.useQuery({shouldPopulateRelation: false}) data.relation // exists when it shouldn't ``` Even more concerning is that the data.relation field isn't even optional which is surely an error