code: def conj(self, copy=True):
      if np.issubdtype(self.dtype, np.complexfloating):
          return self._with_data(self.data.conj(), copy=copy)
      elif copy:
          return self.copy()
      else:
          return self
  
imports: import numpy
  from .base import spmatrix, _ufuncs_with_fixed_point_at_zero
  from .sputils import isscalarlike, validateaxis, matrix
label_desc: Use image node_id 13 for calling the _data_matrix obj's underlying member method code with example usage: obj.conj(copy) and returns: self, self, self