This special field is filled with raw json object data by json parser when reading DTO from string. During writing DTO to string if this field is present and initialized in DTO, then it's data is merged with DTO fields (DTO fields take precedence over fields from "__data").
This special field is filled with raw json object data by json parser when reading DTO from string. During writing DTO to string if this field is present and initialized in DTO, then it's data is merged with DTO fields (DTO fields take precedence over fields from "__data").
Closes #4 .