contains filter on ModelAlias does result in error

[wibed]

Code

...
final class ModuleAsset: ModelAlias {
  static let name = "moduleasset"
  let model = Asset()
}
...

      .filter(ModuleAsset.self, \.$name != participantmoduleName)
...

Error

Operator function '!~' requires that 'ModuleAsset' conform to 'Model'

summary

expected to filter on a contains filter. contains does not.
i tried:

• comparison filter (==) works fine