code: function insertComment(input, element, comment) {
              // Sanity check
              verifyParameterIsDefined(input, 'input', insertComment.name);
              verifyParameterIsDefined(element, 'element', insertComment.name);
  
              return insertAfter(normalizeValue(input), normalizeRegExp(`<\/${normalizeValue(element)}[^\>]*>`), `/* ${normalizeValue(comment)} */`);
          }
docs: Inserts an HTML comment into the input string after the first occurrence of the element close tag.
  
  @param {String|Function} input the input to replace
  @param {String|Function} element the element to add the comment after
  @param {String|Function} [content] the comment to add.
  @return {String} a String which has the comment added after the first occurrence of the element close tag within the input string
  @throws {String} when input or element are not defined