function constructTreeWithInPredicate(valueCount) {
  var values = new Array(valueCount);
  for (var i = 0; i < values.length; i++) {
    values[i] = (i + 1).toString();
  }
  return constructTreeWithPredicate(e.id.in(values));
}
Constructs a tree that has an IN predicate.
@param {number} valueCount The number of values in the IN predicate.
@return {lf.testing.treeutil.Tree} The constructed tree and corresponding
    query context.