Returns a mutable set containing all distinct elements from the given array.
The returned set preserves the element iteration order of the original array.
Returns a mutable set containing all distinct elements from the given collection.
The returned set preserves the element iteration order of the original collection.
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Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/to-mutable-set.html