code: public static <T extends AVObject> AVQuery<T> or(List<AVQuery<T>> queries) {
      if (null == queries || queries.isEmpty()) {
        throw new IllegalArgumentException("queries must be non-empty.");
      }
      String className = queries.get(0).getClassName();
  
      AVQuery<T> result = new AVQuery<T>(className);
      if (queries.size() > 1) {
        for (AVQuery<T> query : queries) {
          if (!className.equals(query.getClassName())) {
            throw new IllegalArgumentException("All queries must be for the same class");
          }
          result.addOrItems(new QueryOperation("$or", "$or", query.conditions
                  .compileWhereOperationMap()));
        }
      } else {
        result.setWhere(queries.get(0).conditions.getWhere());
      }
  
      return result;
    }
docs: Constructs a query that is the or of the given queries.
  
  @param queries The list of AVQueries to 'or' together
  @return A AVQuery that is the 'or' of the passed in queries