Feature attributes have specific data types which the QT SDK v100.0 enumerates here: https://developers.arcgis.com/qt/latest/qml/api-reference/enums-fieldtype.html
How would you recommend verifying that a user-inputted string will be supported in the feature table? If a datum is formatted incorrectly, the feature table rejects my updates instantly without sending a request. To me this indicates there are definitions for these field types somewhere in the library. How do I access this so I can make sure to validate/convert user input correctly?