docs: function checkQueryArray(queryArray) {
    if (queryArray == null) {
      return queryArray;
    }
  
    var max = queryArray.length;
    if (max === 0) {
      return queryArray;
    }
  
    var i = 0;
    for (; i < max; i++) {
      checkQuery(queryArray[i]);
    }
  
    return queryArray;
  }