this.unroll(this.dataa.GENERIC_ROUGHDRAFT.LINE_ITEM_DETAIL);
    console.log(this.arr);
  }

  arr = [];

  unroll(obj: any) {
    if (Array.isArray(obj)) {
      obj.forEach(e => {
        this.unroll(e);
      });
    } else if (typeof obj === 'object' && obj !== null) {
      const keys = Object.keys(obj);
      keys.forEach(e => {
        if (e === 'ITEMS') {
          if (Array.isArray(obj.ITEMS.ITEM)) {
            this.arr.push(...obj.ITEMS.ITEM);
          } else {
            this.arr.push(obj.ITEMS.ITEM);
          }
        }
        this.unroll(obj[e]);
      });
    }
  }