namespaces not resolved when assigning to a field on a class

[georgejecook]

I want to mixin methods in rooibos

field is declared

    private RunItGroups = Rooibos.TestRunnerMixin.RunItGroups
    private RunTestCases = Rooibos.TestRunnerMixin.RunTestCases

but app crashes on :

m.RunItGroups = Rooibos.TestRunnerMixin.RunItGroups

generated constructor is

    instance = {}
    instance.new = function(args = {})
        m.RunItGroups = Rooibos.TestRunnerMixin.RunItGroups
        m.RunTestCases = Rooibos.TestRunnerMixin.RunTestCases
        m.testScene = args.testScene
        m.nodeContext = args.nodeContext
        config = RBSFM_getRuntimeConfig()