RetroFitServices.kt

interface RetroService

interface GitHubService: RetroService {
    @GET("users/{user}/repos")
    fun listGitHubRepos(@Path("user") user: String): List<GitHubRepo>
}

interface AwsCodeCommitService: RetroService {
    @GET("ListRepositories")
    fun listAwsRepos(): List<AwsRepo>
}
interface BitBucketService: RetroService {
    @GET("2.0/repositories")
    suspend fun listBitBucketRepos(): List<BitBucketRepo>
}
//Many more services
interface GitLabService: RetroService
interface MercurialService: RetroService