` operator fun invoke(args: EmbedDSLHandle.() -...
# getting-started
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operator fun invoke(args: EmbedDSLHandle.() -> Unit) {}
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It defines a function that takes an anonymous function literal with receiver, read this https://kotlinlang.org/docs/reference/lambdas.html#function-literals-with-receiver and then the linked page https://kotlinlang.org/docs/reference/type-safe-builders.html for how to apply them.