J2K: correct handling of properties with "is" notation

j2k/testData/fileOrElement/detectProperties/IsPrefix.java

@@ -0,0 +1,39 @@
+interface I {
+    boolean isSomething1();
+
+    Boolean isSomething2();
+
+    int isSomething3();
+
+    boolean isSomething4();
+    void setSomething4(boolean value);
+
+    boolean isSomething5();
+    void setSomething5(boolean value);
+
+    boolean getSomething6();
+    void setSomething6(boolean value);
+}
+
+abstract class C implements I {
+    @Override
+    public boolean isSomething1() {
+        return true;
+    }
+
+    public void setSomething1(boolean b) {
+    }
+
+    @Override
+    public boolean isSomething4() {
+        return false;
+    }
+
+    @Override
+    public void setSomething5(boolean value) {
+    }
+
+    @Override
+    public void setSomething6(boolean value) {
+    }
+}