code: public void setRelation(RegulationOfGeneExpression v) {
      if (GeneRegulationTemplate_Type.featOkTst && ((GeneRegulationTemplate_Type)jcasType).casFeat_relation == null)
        jcasType.jcas.throwFeatMissing("relation", "de.julielab.jules.types.bootstrep.GeneRegulationTemplate");
      jcasType.ll_cas.ll_setRefValue(addr, ((GeneRegulationTemplate_Type)jcasType).casFeatCode_relation, jcasType.ll_cas.ll_getFSRef(v));}
docs: setter for relation - sets mention of gene regulation relation
  @generated
  @param v value to set into the feature