code: public void setSourceOntology(String v) {
      if (OntRelationMention_Type.featOkTst && ((OntRelationMention_Type)jcasType).casFeat_sourceOntology == null)
        jcasType.jcas.throwFeatMissing("sourceOntology", "de.julielab.jules.types.OntRelationMention");
      jcasType.ll_cas.ll_setStringValue(addr, ((OntRelationMention_Type)jcasType).casFeatCode_sourceOntology, v);}
docs: setter for sourceOntology - sets Ontology defining the relation to which the relation mention refers to.
  @generated
  @param v value to set into the feature