// Service.kt
package topic

interface Service {
    ...
}

// ABC.kt
package somepackage

class ABC(val topicService: topic.Service)

/// instead of ///


// TopicService.kt
package topic.service

interface TopicService {
    ...
}

// ABC.kt
package somepackage
import topic.service.TopicService

class ABC(val topicService: TopicService)