helpInformation(contextOptions) {
    const helper = this.createHelp();
    const context = this._getOutputContext(contextOptions);
    helper.prepareContext({
      error: context.error,
      helpWidth: context.helpWidth,
      outputHasColors: context.hasColors,
    });
    const text = helper.formatHelp(this, helper);
    if (context.hasColors) return text;
    return this._outputConfiguration.stripColor(text);
  }
Return program help documentation.

@param {{ error: boolean }} [contextOptions] - pass {error:true} to wrap for stderr instead of stdout
@return {string}