>True. Dictionary#get() can only return a single type, so
>ResponsePropertiesDictionary has to implement Dictionary<String,
>ImmutableList<String>>. However, put() can support overloads. We could
>potentially add put(String, Sequence<String>) methods to ArgumentsDictionary
>and RequestPropertiesDictionary to support this feature.
Wait - that doesn't completely work because it would preclude a caller from
retrieving any sequence values that were set. How about this: instead of
changing the type of the Dictionary parameters, what if we did something like
this that all of the dictionaries could implement:
public interface QueryDictionary
extends Dictionary<String, String>, Iterable<String> {
public String get(String key, int index);
public String put(String key, Sequence<String> values);
}
I think this might support the multi-value use case. As a nice side effect, it
wouldn't break any existing code. :-)
Thoughts?
