test.kt 1 light_idea_test_case Type parameter can have 'in' or 'out' variance Type parameter can have 'out' variance test.kt 5 light_idea_test_case Type parameter can have 'in' or 'out' variance Type parameter can have 'in' variance test.kt 17 light_idea_test_case Type parameter can have 'in' or 'out' variance Type parameter can have 'out' variance test.kt 21 light_idea_test_case Type parameter can have 'in' or 'out' variance Type parameter can have 'in' variance