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Setter

interface Setter<D, E, R> : Setter<R>, (D, E, R) -> Unit

Setter of the property is a set method declared alongside the property.

Can be used as a function that takes an argument of type D (the first receiver), an argument of type E (the second receiver), and the new property value and returns Unit.

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Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.reflect/-k-mutable-property2/-setter.html