--- /dev/null
+<html>
+<head>
+<title>Association category enhancements</title>
+</head>
+<body>
+<h1>Association category enhancements</h1>
+
+A {@link org.apache.lucene.facet.enhancements.CategoryEnhancement CategoryEnhancement}
+for adding associations data to the index (categories with
+{@link org.apache.lucene.facet.enhancements.association.AssociationProperty AssociationProperty}'s).
+
+</body>
+</html>
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