I have some base class which is wrapper over BitSet. It has multiple descendants. In base class I want to force descendants to implement validate method for constructor which accepts long. It will be different for each child. So I’ve created the following base class:

abstract class BaseClassModel {
    private val bitset: BitSet
    private val maxBytes = 64

    constructor(longValue: Long) {
        validate(longValue)
        bitset = BitSet.valueOf(longArrayOf(longValue))
    }

    constructor(vararg attributes: BaseAttribute) {
        bitset = BitSet(maxBytes)
        attributes.forEach { set(it) }
    }

    abstract fun validate(longValue: Long)
    ...
 }

interface BaseAttribute{
    val bitIndex: Int
}

But at this case I receive the warning:

Calling non-final function validate in constructor
I thoroghly read Kotlin calling non final function in constructor works and why this warning is shown but I don’t know how to avoid it. Moreover I’m sure that other fields of BaseClassModel won’t be used in validation method.

I see the options:

1. Call validate in constructor of each child. At this case I see risks that someone could forget to call validate.
2. Ignore this warning. It is just warning.

Is there better option ?