tle: "Metadata", data: function (row, type, set) {
                if (row.hasOwnProperty('metadata')) {
                  if (row.metadata){
                    return JSON.stringify(row.metadata)
                  }                  
                }
                return '-'
              },
            },
          ],
          layout: {
            topStart: {
              buttons: [
                { text: 'Delete',
                  action: function () { 
                    arr = []
             