code: function getFieldRow(name) {
      if (model.nest === null) return 0;
      const foundRow = model.nest.reduce((prev, item, i) => {
        const val = item.value.filter((def) => def.name === name);
        if (val.length > 0) {
          return item.key;
        }
        return prev;
      }, 0);
      return foundRow;
    }
docs: which row of model.nest does this field name reside in?