fun <T : Any> Sequence<T?>.requireNoNulls(): Sequence<T>
Returns an original collection containing all the non-null elements, throwing an IllegalArgumentException if there are any null elements.
The operation is intermediate and stateless.
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Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.sequences/require-no-nulls.html