Method begin

src/lib/geogram/basic/progress.cpp:145–148

\copydoc GEO::ProgressClient::begin() */

    public:
        /** \copydoc GEO::ProgressClient::begin() */
        void begin() override {
            const ProgressTask* task = Progress::current_progress_task();
            CmdLine::ui_progress(task->task_name(), 0, 0);
        }

        /** \copydoc GEO::ProgressClient::progress(index_t,index_t) */
        void progress(index_t step, index_t percent) override {