whole_func_string: function calcStats() {
    return {
      maxIdLength: Math.max(...Object.keys(loggers).map((l) => l.length))
    };
  }
func_code_string: function calcStats() {
    return {
      maxIdLength: Math.max(...Object.keys(loggers).map((l) => l.length))
    };
  }
func_documentation_string: Prepare stats. Currently only maxIdLength supported in core, can be extended
  in custom plugin.
  
  @return {{maxIdLength: number}}