+ Meanings lookup(docstring const & text, docstring const & lang);
+ /** check if a thesaurus for a given language \p lang is available
+ * (installed and loaded)
+ */
+ bool thesaurusAvailable(docstring const & lang) const;
+ /// check if a thesaurus for a given language \p lang is installed
+ bool thesaurusInstalled(docstring const & lang) const;