whole_func_string: function splitLines(string, index) {
    const str = index ? string.substring(index) : string;
    return str.split(/\r\n|\r|\n/);
  }
func_code_string: function splitLines(string, index) {
    const str = index ? string.substring(index) : string;
    return str.split(/\r\n|\r|\n/);
  }
func_documentation_string: Creates an array of lines split by line breaks
  @param   {Number} index optional starting index
  @returns {String[]}  an array of strings