Add better handling of functional types in rendered output

[BarkingBad]

260 lines are just tests

val n1: Function1<Int, String> = { _ -> "" }
val n2: (Int) -> String = { _ -> "" }
val n3: Boolean.(Int) -> String = { _ -> "" }
val n4: (param: Int) -> String = { _ -> "" }
val n5: suspend (Int) -> String = { _ -> "" }
val n6: suspend Boolean.(Int) -> String = { _ -> "" }
val n7: suspend (param: Int) -> String = { _ -> "" }
val n8: suspend (param1: suspend Boolean.(param2: List<Int>) -> Boolean) -> String = { _ -> "" }

[BarkingBad]

Also works for Java sources

public class JavaClass {
    public java.util.function.Function<String, Integer> javaFunction = null;
    public kotlin.jvm.functions.Function1<String, Integer> kotlinFunction = null;
}

[MarcinAman]

why val n1: Function1<Int, String> = { _ -> "" } is represented the same as (Int) -> String = { _ -> "" }? shouldn't we preserve information about the type exactly?

[BarkingBad]

@MarcinAman because (Int) -> String and Function1<Int, String> are exactly the same type, former is just syntactic sugar

[MarcinAman]

Oh ok, was just wondering if this was intentional. If so then ok