whole_func_string: function Range(start, end, step) {
    this.start = start || 0;
    this.end = end || 60;
    this.step = step || 1;
  }
func_code_string: function Range(start, end, step) {
    this.start = start || 0;
    this.end = end || 60;
    this.step = step || 1;
  }
func_documentation_string: /* Range object