code: public AVQuery<T> whereContainedIn(String key, Collection<? extends Object> values) {
      conditions.whereContainedIn(key, values);
      return this;
    }
docs: Add a constraint to the query that requires a particular key's value to be contained in the
  provided list of values.
  
  @param key The key to check.
  @param values The values that will match.
  @return Returns the query, so you can chain this call.