code: @Override public IsolationForestModel createImpl() {
      IsolationForestV3.IsolationForestParametersV3 p = this.parameters;
      IsolationForestModel.IsolationForestParameters parms = p.createImpl();
      return new IsolationForestModel( model_id.key(), parms, new IsolationForestModel.IsolationForestOutput(null) );
    }
docs: Version&Schema-specific filling into the impl