code: function normalizeError(err,pools){
      if (!(err instanceof Error)){
          err = new Error(err)
      }
      if (!err._isException){
  
          //Iterate over exceptionPools finding error match
          for(let i=0;i<pools.length;i++){
              let exception = pools[i]._convert(err)
              if (exception) return exception
          }
      }
      return err
  }
docs: Tries to always return an expressDeliver exception
  @param  {any} err
  @param  {Array<ExceptionPool>} pools
  @return {Exception}