Method getListOfObjects

core/src/main/java/io/grpc/internal/JsonUtil.java:56–63

Gets a list from an object for the given key, and verifies all entries are objects. If the key is not present, this returns null. If the value is not a List or an entry is not an object, throws an exception.

(Map<String, ?> obj, String key)

   * throws an exception.
   */
  @Nullable
  public static List<Map<String, ?>> getListOfObjects(Map<String, ?> obj, String key) {
    List<?> list = getList(obj, key);
    if (list == null) {
      return null;
    }
    return checkObjectList(list);
  }

  /**
   * Gets a list from an object for the given key, and verifies all entries are strings.  If the key