Small javadoc fixes

Also, fix test for use of the FrameworkFactory
diff --git a/atomos.tests/atomos.tests.modulepath.service/src/main/java/module-info.java b/atomos.tests/atomos.tests.modulepath.service/src/main/java/module-info.java
index e957526..bdde920 100644
--- a/atomos.tests/atomos.tests.modulepath.service/src/main/java/module-info.java
+++ b/atomos.tests/atomos.tests.modulepath.service/src/main/java/module-info.java
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import org.apache.felix.atomos.Atomos;
+import org.osgi.framework.connect.ConnectFrameworkFactory;
 
 module org.apache.felix.atomos.tests.modulepath.service
 {
@@ -23,7 +23,7 @@
     requires org.apache.felix.scr;
     requires osgi.promise;
 
-    uses Atomos;
+    uses ConnectFrameworkFactory;
 
     opens org.apache.felix.atomos.tests.modulepath.service;
 
diff --git a/atomos.tests/atomos.tests.modulepath.service/src/test/java/org/apache/felix/atomos/tests/modulepath/service/ModulepathLaunchTest.java b/atomos.tests/atomos.tests.modulepath.service/src/test/java/org/apache/felix/atomos/tests/modulepath/service/ModulepathLaunchTest.java
index b011168..fe2dc65 100644
--- a/atomos.tests/atomos.tests.modulepath.service/src/test/java/org/apache/felix/atomos/tests/modulepath/service/ModulepathLaunchTest.java
+++ b/atomos.tests/atomos.tests.modulepath.service/src/test/java/org/apache/felix/atomos/tests/modulepath/service/ModulepathLaunchTest.java
@@ -435,7 +435,7 @@
     @Test
     void testAddLayerBeforeFrameworkFactory(@TempDir Path storage) throws BundleException
     {
-        doAddLayerBeforeFramework(storage, true);
+        doAddLayerBeforeFramework(storage, false);
     }
 
     void doAddLayerBeforeFramework(Path storage, boolean useAtomosNewFramework)
diff --git a/atomos/src/main/java/org/apache/felix/atomos/AtomosContent.java b/atomos/src/main/java/org/apache/felix/atomos/AtomosContent.java
index 9350898..7da2131 100644
--- a/atomos/src/main/java/org/apache/felix/atomos/AtomosContent.java
+++ b/atomos/src/main/java/org/apache/felix/atomos/AtomosContent.java
@@ -60,7 +60,7 @@
      * @param type Class object for the type to which this Atomos content is to be
      *        adapted.
      * @return The object, of the specified type, to which this Atomos content has been
-     *         adapted or {@code null} if this content cannot be adapted to the
+     *         adapted or {@code empty} if this content cannot be adapted to the
      *         specified type.
      */
     <T> Optional<T> adapt(Class<T> type);
diff --git a/atomos/src/main/java/org/apache/felix/atomos/AtomosLayer.java b/atomos/src/main/java/org/apache/felix/atomos/AtomosLayer.java
index d4a9819..0fc64da 100644
--- a/atomos/src/main/java/org/apache/felix/atomos/AtomosLayer.java
+++ b/atomos/src/main/java/org/apache/felix/atomos/AtomosLayer.java
@@ -55,6 +55,7 @@
          */
         MANY
     }
+    
     /**
      * Adapt this Atomos layer to the specified type. For example,
      * if running in a module layer then the layer can be adapted
@@ -63,7 +64,7 @@
      * @param type Class object for the type to which this Atomos layer is to be
      *        adapted.
      * @return The object, of the specified type, to which this Atomos layer has been
-     *         adapted or {@code null} if this layer cannot be adapted to the
+     *         adapted or {@code empty} if this layer cannot be adapted to the
      *         specified type.
      */
     <T> Optional<T> adapt(Class<T> type);