There are a lot of useful methods already:
- StreamEx#mapPartial
- EntryStream#mapToKeyPartial
- EntryStream#mapToValuePartial
- EntryStream#mapKeyValuePartial
Hovewer to exclude some cases to write sequential mapKeys().nonNullKeys() is should be great to use one method.
Plus, these two methods will be consumers, not bi-consumers, allowing to use method references.
Tagir, thanks a lot for you library!