How to use TFLite model signatures with InterpreterApi in LiteRT from Google Play Services ()?

I’m migrating my Android project from the bundled TensorFlow Lite to TensorFlow Lite via Google Play Services (LiteRT).

I use Movinet, which uses signatures and I’m feeding it individual video frames one by one for streaming inference.

In the old bundled  Interpreter  class, I could use:
interpreter.runSignature(inputs, outputs, "serving_default")

However, after migrating to  InterpreterApi  from Play Services, this method does not appear to be available —  InterpreterApi  only exposes  run()  and  runForMultipleInputsOutputs().

How to use TFLite model signatures with InterpreterApi?