code: def _deduped_data(self):
      if hasattr(self, "sum_duplicates"):
          self.sum_duplicates()
      return self.data
  
imports: import numpy
  from ._base import _spbase, _ufuncs_with_fixed_point_at_zero
  from ._sputils import isscalarlike, validateaxis
label_desc: Use image node_id 4 for calling the _data_matrix obj's underlying member method code with example usage: obj._deduped_data() and returns: self