code: public Protein getProtein() {
      if (CellTypeProteinConcentration_Type.featOkTst && ((CellTypeProteinConcentration_Type)jcasType).casFeat_protein == null)
        jcasType.jcas.throwFeatMissing("protein", "ch.epfl.bbp.uima.types.CellTypeProteinConcentration");
      return (Protein)(jcasType.ll_cas.ll_getFSForRef(jcasType.ll_cas.ll_getRefValue(addr, ((CellTypeProteinConcentration_Type)jcasType).casFeatCode_protein)));}
docs: getter for protein - gets
  @generated
  @return value of the feature