Add leafrefBaseType(const std::string&)

Will be useful in the upcoming describe command.

Change-Id: I180b0a3c87db8e856251e28f34aa3940c52d1ad0
diff --git a/src/static_schema.hpp b/src/static_schema.hpp
index 7c0b0c2..1328a93 100644
--- a/src/static_schema.hpp
+++ b/src/static_schema.hpp
@@ -58,6 +58,7 @@
     yang::LeafDataTypes leafType(const schemaPath_& location, const ModuleNodePair& node) const override;
     yang::LeafDataTypes leafType(const std::string& path) const override;
     yang::LeafDataTypes leafrefBaseType(const schemaPath_& location, const ModuleNodePair& node) const override;
+    yang::LeafDataTypes leafrefBaseType(const std::string& path) const override;
     const std::set<std::string> enumValues(const schemaPath_& location, const ModuleNodePair& node) const override;
     const std::set<std::string> validIdentities(const schemaPath_& location, const ModuleNodePair& node, const Prefixes prefixes) const override;
     std::set<std::string> childNodes(const schemaPath_& path, const Recursion) const override;