one more try to fix nosuchelement exception

features/roles/common/src/commonMain/kotlin/dev/inmo/postssystem/features/roles/common/Role.kt

@@ -7,7 +7,11 @@ import kotlinx.serialization.encoding.*
 import kotlinx.serialization.json.*
 
 @Serializable(RoleSerializer::class)
-interface Role
+interface Role {
+    companion object {
+        fun serializer(): KSerializer<Role> = RoleSerializer
+    }
+}
 
 @Serializable
 data class UnknownRole(val originalJson: JsonElement) : Role