code: public String getOperator() {
      if (VariableAssignment_Type.featOkTst && ((VariableAssignment_Type)jcasType).casFeat_operator == null)
        jcasType.jcas.throwFeatMissing("operator", "ch.epfl.bbp.uima.types.VariableAssignment");
      return jcasType.ll_cas.ll_getStringValue(addr, ((VariableAssignment_Type)jcasType).casFeatCode_operator);}
docs: getter for operator - gets math operator like equal, lt, gt, ...
  @generated
  @return value of the feature