code: def to_dict(self, data=True):
          
          item = {'dims': self.dims,
                  'attrs': decode_numpy_dict_values(self.attrs)}
          if data:
              item['data'] = ensure_us_time_resolution(self.values).tolist()
          else:
              item.update({'dtype': str(self.dtype), 'shape': self.shape})
          return item
docs: Dictionary representation of variable.