code: @JsonMappingCompleted
    protected void jsonMappingCompleted(JsonMapper jsonMapper) {
  
      if (rawMessageTags != null) {
        messageTags = createTags(rawMessageTags, jsonMapper);
      }
  
      if (rawStoryTags != null) {
        storyTags = createTags(rawStoryTags, jsonMapper);
      }
  
    }
docs: Post-JSON-mapping operation that populates the {@code messageTags} field "by hand".
  <p>
  This is a temporary hack until we have formal public support for it/improved {@code JsonMapper} capabilities so it
  can handle arbitrary Map types.
  
  @param jsonMapper
  The {@code JsonMapper} that was used to map to this type.
  @since 1.6.11