Merge values in map kotlin Languages

Merge values in map kotlin

I need merge maps mapA andmapB with pairs of "name" - "phone number" into the final map, sticking together the values for duplicate keys, separated by commas. Duplicate values should be added only once. I need the most idiomatic and correct in terms of language approach.
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Redundant 'if' statement less Languages

Redundant 'if' statement less

My code is as belowThe compiler tell meRedundant 'if' statement less... (Ctrl+F1) This inspection reports if statements which can be simplified to single statements. For example: if (foo()) { return true } else { return false } can be simplified to return foo().
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