Connecting Artificial Neural Network (ANN) Model to Extended Kalman Filter

Hi,

I have an ANN model, which is a black-box non-linear model developed. How do I implement or connect this model to an extended or Unscented Kalman filter (EKF or UKF) in Simulink? Especially how to generate or write the state transition and measurement functions for such a system and then flow/stream a live data for the filter to compare the preictions from the ANN model with that of the live data and make the best estimate?

Thank you!