/main.kt:(78,81): error: This function accidentally overrides both 'public open operator fun /A.get(index: kotlin/Int): kotlin/Char' and a renamed function 'public open fun /A.charAt(index: kotlin/Int): kotlin/Char' from JVM point of view because of mixed Java/Kotlin hierarchy.
This situation provokes a JVM clash and thus is forbidden. To fix it, you have to delete either this function or one of overridden functions.
