code: protected FaultsModel toFaultsModel(Fault[] faults, KnowledgeNamespace knowledgeNamespace) {
          FaultsModel faultsModel = null;
          if (faults != null) {
              for (Fault fault : faults) {
                  if (fault != null) {
                      FaultModel faultModel = new V1FaultModel(knowledgeNamespace.uri());
                      String from = fault.from();
                      if (!UNDEFINED.equals(from)) {
                          faultModel.setFrom(from);
                      }
                      String to = fault.to();
                      if (!UNDEFINED.equals(to)) {
                          faultModel.setTo(to);
                      }
                      if (faultsModel == null) {
                          faultsModel = new V1FaultsModel(knowledgeNamespace.uri());
                      }
                      faultsModel.addFault(faultModel);
                  }
              }
          }
          return faultsModel;
      }
docs: Converts faults to mappings model.
  
  @param faults faults
  @param knowledgeNamespace knowledgeNamespace
  @return mappings model