code: protected OutputsModel toOutputsModel(Output[] outputs, KnowledgeNamespace knowledgeNamespace) {
          OutputsModel outputsModel = null;
          if (outputs != null) {
              for (Output output : outputs) {
                  if (output != null) {
                      OutputModel outputModel = new V1OutputModel(knowledgeNamespace.uri());
                      String from = output.from();
                      if (!UNDEFINED.equals(from)) {
                          outputModel.setFrom(from);
                      }
                      String to = output.to();
                      if (!UNDEFINED.equals(to)) {
                          outputModel.setTo(to);
                      }
                      if (outputsModel == null) {
                          outputsModel = new V1OutputsModel(knowledgeNamespace.uri());
                      }
                      outputsModel.addOutput(outputModel);
                  }
              }
          }
          return outputsModel;
      }
docs: Converts outputs to mappings model.
  
  @param outputs outputs
  @param knowledgeNamespace knowledgeNamespace
  @return mappings model