Fixes keys refs #1731

Author: JJ

doc/Type/Any.pod6

@@ -1006,18 +1006,22 @@ converting the object to a list is not a list of pairs, the method will fail.
 
 Defined as:
 
-    multi method kv(Any:U:  -->List)
-    multi method kv(Any:D:  -->List)
+    multi method kv(Any:U:)
+    multi method kv(Any:D:)
+    multi sub    kv($x)
 
-Invokes C<list> on the invocant and returns the result of
-L<List.kv|/type/List#routine_kv> on it.
-Returns an empty L<List|/type/List> if the invocant is undefined:
 
-    my $a;
-    say $a.kv;      # OUTPUT: «()»
-    $a = Any.new;
-    say $a.kv;      # OUTPUT: «(0 Any.new)»
-    say Any.kv;     # OUTPUT: «()␤»
+Returns an empty L<List|/type/List> if the invocant is a type object:
+
+    Sub.kv.say ;# OUTPUT: «()␤»
+
+It calls C<list> on the invocant for value objects and returns the result of
+L<List.kv|/type/List#routine_kv> on it as a list where keys and values will be
+ordered and contiguous
+
+    <1 2 3>.kv.say; # OUTPUT: «(0 1 1 2 2 3)␤»
+
+In the case of C<Positional>s, the indices will be considered I<keys>.
 
 =head2 method toggle