Cannot iterate over JavaUtilMap in Swift: 'JavaUtilSet' does not have a member named 'Generator'

Having the following Map:

let params: JavaUtilMap = // defined

I tried this:

for entry in params.entrySet() {

      }

But it leads to the following error:

 'JavaUtilSet' does not have a member named 'Generator'

[confile]

Well I guess it is the following way, but it is not very easy:

      let params: JavaUtilMap = // defined
      let entrySet:JavaUtilSet = params.entrySet()
      let iteratory:JavaUtilIterator = entrySet.iterator()
      while iteratory.hasNext() {
        let entry:JavaUtilMap_Entry = iteratory.next() as! JavaUtilMap_Entry
      }

[confile]

Here is my solution: https://github.com/google/j2objc/issues/533