code: function(language)
      {
          var app = this;
          var nls = {};
          try
          {
              if(app.nls.hasOwnProperty(language)){
                  nls = app.nls[language];
              }else{                
                  throw "not found";
              }
          }
          catch(e)
          {
              var objFilePath = path.join(app._path,"nls",language);
              if(fs.existsSync(objFilePath+".js"))
              {
                  var nlsConfig = require(objFilePath);
                  if(typeof app.nls != "object") app.nls={};
                  app.nls[language]= nlsConfig;                    
                  nls = nlsConfig;
              }
          }
          return nls;
      }
docs: Get specified openbiz pre-defined system nls.
  
  This method it part of {@link openbiz.objects.Application},
  please never call this directly by ObjectService.
  
  if need to call this method, you have to use javascript's function.apply(applicationPointer,params)
  please see sample
  @memberof openbiz.services.ObjectService
  @param {string} language code eg: en-US
  @returns object
  
  @example
  // object will looks like below
  // {
  //    resetpassword: "Reset Password",
  //    forgetpassword: "Forgot Password",
  //    inviteuser: "Invite User",
  //    createmechantuser: "Merchant user Register",
  // }
  var nls = app.openbiz.apps.core.nls['en-US'];
  
  var resetpassword = nls.resetpassword;