diff --git a/core/src/main/java/hudson/tasks/Maven.java b/core/src/main/java/hudson/tasks/Maven.java
index a9fe10df7234b1d5f3965d5e4ed4d4fd897fddde..21388a0d9e25d60c0f1223e592fd5533c4d3dd5a 100644
--- a/core/src/main/java/hudson/tasks/Maven.java
+++ b/core/src/main/java/hudson/tasks/Maven.java
@@ -533,11 +533,15 @@ public class Maven extends Builder {
                 return Collections.singletonList(new MavenInstaller(null));
             }
 
+            // overriding them for backward compatibility.
+            // newer code need not do this
             @Override
             public MavenInstallation[] getInstallations() {
                 return Jenkins.getInstance().getDescriptorByType(Maven.DescriptorImpl.class).getInstallations();
             }
 
+            // overriding them for backward compatibility.
+            // newer code need not do this
             @Override
             public void setInstallations(MavenInstallation... installations) {
                 Jenkins.getInstance().getDescriptorByType(Maven.DescriptorImpl.class).setInstallations(installations);