One default alias declared by a mixin's static defaultAliases field. Walked at resolution time via MixinApi.queryMixins; v1 ships an empty default set on AliasMixin itself — content mixins populate.
defaultAliases
MixinApi.queryMixins
Optional
One default alias declared by a mixin's static
defaultAliasesfield. Walked at resolution time viaMixinApi.queryMixins; v1 ships an empty default set on AliasMixin itself — content mixins populate.