Unable to access companion object used in kotlin class after enabling proguard

Question

I have a Kotlin class with some variables in companion object. After enabling proguard, The variables are not getting accessed.

class Test{    
    ......    
    companion object {    
        const val USER_NAME = "user_name"    
        .....    
  }    
  .....    
}  

Proguard rules include:-

-keep class kotlin.** { *; }    
-keep class kotlin.Metadata { *; }    
-dontwarn kotlin.**    
-keepclassmembers class **$WhenMappings {    
    <fields>;    
}    
-keepclassmembers class kotlin.Metadata {    
    public <fields>;    
    public <methods>;    
}    

-keepclassmembers class * {    
    static final % *;    
    static final java.lang.String *;    
}    

Answer 1

Problem resolved using @Keep before companion object

class Test{    
    ......    
    @Keep companion object {    
        const val USER_NAME = "user_name"    
        .....    
  }    
  .....    
}