kotlinx-serialization-core/kotlinx.serialization.descriptors/SerialDescriptor/getElementIndex

getElementIndex

@ExperimentalSerializationApi
abstract fun getElementIndex(name: String): Int(source)

Returns an index in the children list of the given element by its name or CompositeDecoder.UNKNOWN_NAME if there is no such element. The resulting index, if it is not CompositeDecoder.UNKNOWN_NAME, is guaranteed to be usable with getElementName.