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use v6; ... my %kv4 = "$var4",'LiteralValue'; say :%kv4.perl;
"kv1" => {"LiteralKey" => "LiteralValue"} "kv2" => {"LiteralKey" => "LiteralValue"} "kv3" => {"Literalkey" => "LiteralValue"} "kv4" => {"LiteralKey" => "LiteralValue"}