Javadoc.
diff --git a/src/main/java/org/apache/commons/configuration2/resolver/CatalogResolver.java b/src/main/java/org/apache/commons/configuration2/resolver/CatalogResolver.java
index 87081fb..df51d28 100644
--- a/src/main/java/org/apache/commons/configuration2/resolver/CatalogResolver.java
+++ b/src/main/java/org/apache/commons/configuration2/resolver/CatalogResolver.java
@@ -326,11 +326,21 @@
             return this.baseDir;
         }
 
-        public void setInterpolator(final ConfigurationInterpolator ci)
+        /**
+         * Sets the ConfigurationInterpolator.
+         * 
+         * @param configurationInterpolator the ConfigurationInterpolator.
+         */
+        public void setInterpolator(final ConfigurationInterpolator configurationInterpolator)
         {
-            interpolator = ci;
+            interpolator = configurationInterpolator;
         }
 
+        /**
+         * Gets the ConfigurationInterpolator.
+         * 
+         * @return the ConfigurationInterpolator.
+         */
         public ConfigurationInterpolator getInterpolator()
         {
             return interpolator;