def get_distance_kernel(self):
"""
DistanceKernel object constructed from this feature's current state.
:return: This feature distance kernel.
:rtype: DistanceKernel
"""
with self._rw_lock.read_lock():
return DistanceKernel(self._id_vector, self._id_vector,
self._kernel_mat, self._bg_clip_ids,
self._rw_lock)
