code: public String getAuthor() {
      if (SourceFile_Type.featOkTst && ((SourceFile_Type)jcasType).casFeat_author == null)
        jcasType.jcas.throwFeatMissing("author", "de.julielab.jules.types.ace.SourceFile");
      return jcasType.ll_cas.ll_getStringValue(addr, ((SourceFile_Type)jcasType).casFeatCode_author);}
docs: getter for author - gets
  @generated
  @return value of the feature