Javadoc.
diff --git a/commons-math-neuralnet/src/main/java/org/apache/commons/math4/neuralnet/Network.java b/commons-math-neuralnet/src/main/java/org/apache/commons/math4/neuralnet/Network.java
index 946d85f..8a21bb4 100644
--- a/commons-math-neuralnet/src/main/java/org/apache/commons/math4/neuralnet/Network.java
+++ b/commons-math-neuralnet/src/main/java/org/apache/commons/math4/neuralnet/Network.java
@@ -92,6 +92,7 @@
      * @param neighbourIdList Links associated to each of the neurons in
      * {@code idList}.
      * @throws IllegalArgumentException if an inconsistency is detected.
+     * @return a new instance.
      */
     public static Network from(int featureSize,
                                long[] idList,