retrofit with filterable query

__IReportService.kt

interface __IReportService {
    @GET("ticket/list")
    fun getReports(@QueryMap(encoded = true) queries: ReportQuery): Call<__ResponseDTO<Array<__ReportDTO>>>

    @POST("ticket/create")
    fun postReport(@Body body: __ReportDTO): Call<__ResponseDTO<__ReportDTO>>

    @POST("ticket/{ticketId}/update")
    fun postUpdateReport(@Path("ticketId") ticketiId: String, @Body body: __ReportDTO): Call<__ResponseDTO<__ReportDTO>>

    @POST("ticket/upload/image")
    fun postImage(@Body form: RequestBody, @Header("fileUri") fileUri: String): Call<__ReportImageDTO>

    @GET("comment/list/{ticketId}/ASC")
    fun getComments(@Path("ticketId") ticketId: String): Call<__ResponseDTO<Array<__ReportMessageDTO>>>

    @GET("comment/list/{ticketId}/{order}")
    fun getComments(@Path("ticketId") ticketId: String, @Path("order") order: String = "ASC"): Call<__ResponseDTO<Array<__ReportMessageDTO>>>


    @POST("comment/create")
    fun postComment(@Body body: __ReportMessageDTO): Call<__ResponseDTO<__ReportMessageDTO>>

    class ReportQuery(var uid: Int = -1) : LinkedHashMap<String, Any?>() {


        var assignedToId: String? = null
        var verificationStatus: String? = null
        var customerId: String? = null
        var assetNumber: String? = null
        var ownerId: String? = null
        var continuationToken: String? = null
        var limit = 10
        var ticketStatus = -1
        var assetType = -1


        /**
         * we add Build function for manual exposing/excluding property
         */
        fun Build(): ReportQuery {
            this.clear()
            this.Put("assignedToId", assignedToId)
            this.Put("verificationStatus", verificationStatus)
            this.Put("customerId", customerId)
            this.Put("assetNumber", assetNumber)
            this.Put("ownerId", ownerId)
            this.Put("continuationToken", continuationToken)
            this.Put("uid", uid, uid != -1)
            this.Put("limit", limit)
            this.Put("status", ticketStatus, ticketStatus != -1)
            this.Put("type", assetType, assetType != -1)
            return this
        }

        /**
         * excluding null or -1 value
         *
         * @param key
         * @param val
         */
        internal fun Put(key: String, `val`: Any?) {
            this.Put(key, `val`, `val` != null)
        }

        /**
         * excluding expected value
         *
         * @param key
         * @param val
         * @param putIf
         */
        internal fun Put(key: String, `val`: Any?, putIf: Boolean) {
            if (putIf) this[key] = `val`
        }
    }


}