Document .pick(**)

doc/Type/List.rakudoc

@@ -737,6 +737,7 @@ against a L<Signature|/type/Signature>.
 
     multi sub    pick($count, *@list --> Seq:D)
     multi method pick(List:D: $count --> Seq:D)
+    multi method pick(List:D: * --> Seq:D)
     multi method pick(List:D: --> Mu)
 
 If C<$count> is supplied: Returns C<$count> elements chosen at random
@@ -754,6 +755,16 @@ Examples:
     say <a b c d e>.pick: 3;        # OUTPUT: «(c a e)␤»
     say <a b c d e>.pick: *;        # OUTPUT: «(e d a b c)␤»
 
+As of the 2021.06 release of the Rakudo compiler, it is also possible to
+specify C<**> (aka C<HyperWhatever>) as the count.
+
+    multi method pick(List:D: ** --> Seq:D)
+
+In that case, C<.pick> will start picking again on the original list
+after it has been exhausted, again and again, indefinitely.
+
+    say <a b c>.pick(**).head(10);  # OUTPUT: «((a c b c a b b c a b))␤»
+
 =head2 routine roll
 
     multi sub    roll($count, *@list --> Seq:D)