Typed requirement marker created by req<Req>(). Pass it as the second argument to defineModelMixin to declare that the base model must already contain the Req shape before the mixin is applied.
req<Req>()
defineModelMixin
Req
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Typed requirement marker created by
req<Req>(). Pass it as the second argument todefineModelMixinto declare that the base model must already contain theReqshape before the mixin is applied.