Method clearGraph

frontend/src/webview.ts:528–532

* Clear the graph completely (used when cache is cleared before reanalysis)

()

     * Clear the graph completely (used when cache is cleared before reanalysis)
     */
    clearGraph() {
        this.postMessage({
            command: 'clearGraph'
        });
    }

    showProgressOverlay(message: string) {
        this.postMessage({ command: 'showProgressOverlay', text: message });