diff --git a/src/utils.hpp b/src/utils.hpp
index f009ccd..38db0af 100644
--- a/src/utils.hpp
+++ b/src/utils.hpp
@@ -5,6 +5,9 @@
  * Written by Václav Kubernát <kubervac@fit.cvut.cz>
  *
 */
+/*! \file utils.hpp
+    \brief A header containing utility functions
+*/
 #include <string>
 #include "ast_path.hpp"
 #include "schema.hpp"
@@ -16,3 +19,7 @@
 std::string leafDataTypeToString(yang::LeafDataTypes type);
 std::string fullNodeName(const schemaPath_& location, const ModuleNodePair& pair);
 std::string fullNodeName(const dataPath_& location, const ModuleNodePair& pair);
+/** Returns a subset of the original set with only the strings starting with prefix
+ * and with the actual prefix deleted from the string
+ */
+std::set<std::string> filterAndErasePrefix(const std::set<std::string>& set, const std::string_view prefix);