diff --git a/src/parser.hpp b/src/parser.hpp
index 343a1e5..8c9290f 100644
--- a/src/parser.hpp
+++ b/src/parser.hpp
@@ -30,6 +30,7 @@
     void changeNode(const dataPath_& name);
     std::string currentNode() const;
     std::set<std::string> availableNodes(const boost::optional<boost::variant<dataPath_, schemaPath_>>& path, const Recursion& option) const;
+    std::set<std::string> completeCommand(const std::string& line, std::ostream& errorStream) const;
 
 private:
     const std::shared_ptr<const Schema> m_schema;