docs: public ConditionalBranchDescrBuilder<CEDescrBuilder<P, T>> conditionalBranch() {
          ConditionalBranchDescrBuilder<CEDescrBuilder<P, T>> conditionalBranch = new ConditionalBranchDescrBuilderImpl<CEDescrBuilder<P, T>>( this );
          ((ConditionalElementDescr) descr).addDescr(conditionalBranch.getDescr());
          return conditionalBranch;
      }