UtilityClassWithPublicConstructor should not be reported for sealed classes

[svick]

Observed Behavior

I have a sealed class with no members of its own, except for a factory function:

sealed class Parent {
    companion object {
        fun create(foo: Int?, bar: String?): Parent? =
            when {
                foo != null -> FooChild(foo)
                bar != null -> BarChild(bar)
                else -> null
            }
    }
}

data class FooChild(val foo: Int) : Parent()

data class BarChild(val bar: String) : Parent()

This reports:

UtilityClassWithPublicConstructor - [Parent]

Expected Behavior

UtilityClassWithPublicConstructor should not be reported for Parent, or any other sealed class, since sealed classes don't have public constructors.

Your Environment

• Version of detekt used: 1.1.0