Hi,
I have in code the following lines (few of `Panel` classes implements
`TagAware` interface):
```Java
private final Map<PanelType, Panel<T>> panels;
//...
panels
.values()
.stream()
.filter(TagAware.class::isInstance)
.map(TagAware.class::cast)
.forEach(t -> t.setTagsWorkHours(this.tagsWorkHours));
```
The code perfectly compile by javac, but not with GWT compiler:
Errors in
'file:/C:/Development/work/repo/JRS/open/gxt/calendar/widget/src/main/java/org/jresearch/gwt/client/date/widget/Calendar.java'
Line 376: The type Class<TagAware> does not define
isInstance(Panel<T>) that is applicable here
Line 376: The method filter(Predicate<? super Panel<T>>) in the
type Stream<Panel<T>> is not applicable for the arguments
(TagAware.class::isInstance)
The same with cast
Errors in
'file:/C:/Development/work/repo/JRS/open/gxt/calendar/widget/src/main/java/org/jresearch/gwt/client/date/widget/Calendar.java'
Line 377: The method map(Function<? super Panel<T>,? extends R>)
in the type Stream<Panel<T>> is not applicable for the arguments
(TagAware.class::cast)
Line 377: The type Class<TagAware> does not define cast(Panel<T>)
that is applicable here
##### Known workarounds
Rewrite the above lines without method references:
```Java
panels
.values()
.stream()
.filter(p -> p instanceof TagAware)
.map(p -> (TagAware) p)
.forEach(t -> t.setTagsWorkHours(this.tagsWorkHours));
```
Best,
Stas
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