companion object {
        fun getNestedType(type: KotlinType): NestedType {
            val possiblyInnerType = type.buildPossiblyInnerType() ?: throw IllegalArgumentException(type.toString())
            val innerTypesAsList = possiblyInnerType.segments()
            val indexOfParameterizedType = innerTypesAsList.indexOfFirst { innerPart -> innerPart.arguments.isNotEmpty() }