diff --git a/core/api/src/main/java/org/onlab/onos/net/intent/HostToHostIntent.java b/core/api/src/main/java/org/onlab/onos/net/intent/HostToHostIntent.java
index f420fc2..7a894be6 100644
--- a/core/api/src/main/java/org/onlab/onos/net/intent/HostToHostIntent.java
+++ b/core/api/src/main/java/org/onlab/onos/net/intent/HostToHostIntent.java
@@ -12,7 +12,7 @@
 /**
  * Abstraction of end-station to end-station bidirectional connectivity.
  */
-public class HostToHostIntent extends ConnectivityIntent {
+public final class HostToHostIntent extends ConnectivityIntent {
 
     private final HostId one;
     private final HostId two;
diff --git a/core/api/src/main/java/org/onlab/onos/net/intent/LinkCollectionIntent.java b/core/api/src/main/java/org/onlab/onos/net/intent/LinkCollectionIntent.java
index 78c95cf..9d0fde8 100644
--- a/core/api/src/main/java/org/onlab/onos/net/intent/LinkCollectionIntent.java
+++ b/core/api/src/main/java/org/onlab/onos/net/intent/LinkCollectionIntent.java
@@ -14,7 +14,7 @@
  * Abstraction of a connectivity intent that is implemented by a set of path
  * segments.
  */
-public class LinkCollectionIntent extends ConnectivityIntent implements InstallableIntent {
+public final class LinkCollectionIntent extends ConnectivityIntent implements InstallableIntent {
 
     private final Set<Link> links;
 
@@ -46,6 +46,12 @@
         return links;
     }
 
+    /**
+     * Returns the set of links that represent the network connections needed
+     * by this intent.
+     *
+     * @return Set of links for the network hops needed by this intent
+     */
     public Set<Link> links() {
         return links;
     }
diff --git a/core/api/src/main/java/org/onlab/onos/net/intent/MultiPointToSinglePointIntent.java b/core/api/src/main/java/org/onlab/onos/net/intent/MultiPointToSinglePointIntent.java
index be8d309..8ee4a9e 100644
--- a/core/api/src/main/java/org/onlab/onos/net/intent/MultiPointToSinglePointIntent.java
+++ b/core/api/src/main/java/org/onlab/onos/net/intent/MultiPointToSinglePointIntent.java
@@ -15,7 +15,7 @@
 /**
  * Abstraction of multiple source to single destination connectivity intent.
  */
-public class MultiPointToSinglePointIntent extends ConnectivityIntent {
+public final class MultiPointToSinglePointIntent extends ConnectivityIntent {
 
     private final Set<ConnectPoint> ingressPoints;
     private final ConnectPoint egressPoint;