text: const rule = 'no-multiple-empty-lines';
  
  function run(unused, file) {
    let errors = [];
    for (let i = 0; i < file.lines.length - 1; i++) {
      if (file.lines[i].trim() === '' && file.lines[i + 1].trim() == '') {
        errors.push({message: 'Multiple empty lines are not allowed',
          rule   : rule,
          line   : i + 2});
      }
    }
    return errors;
  }
  
  module.exports = {
    name: rule,
    run: run
  };
  