code: @Nullable
      public T find(byte[] bytes)
      {
          ByteTrieNode<T> node = _root;
          T value = node._value;
          for (byte b : bytes) {
              ByteTrieNode<T> child = node._children.get(b);
              if (child == null)
                  break;
              node = child;
              if (node._value != null)
                  value = node._value;
          }
          return value;
      }
docs: Return the most specific value stored for this byte sequence.
  If not found, returns <code>null</code> or a default values as specified by
  calling {@link ByteTrie#setDefaultValue}.