Method getNewestHelpPanel

src/helpViewer/index.ts:397–407

(
        createNewPanel: boolean = true,
    )

    public getNewestHelpPanel(): HelpPanel
    public getNewestHelpPanel(createNewPanel: boolean): HelpPanel | undefined
    public getNewestHelpPanel(
        createNewPanel: boolean = true,
    ): HelpPanel | undefined {
        if (this.helpPanels.length) {
            return this.helpPanels[0];
        } else if (createNewPanel) {
            return this.makeNewHelpPanel();
        } else {
            return undefined;
        }
    }

    // search function, similar to typing `?? ...` in R
    public async searchHelpByText(): Promise<boolean> {