code: def _get_atomic_dtype(data_type):
      
      atomic_type = getattr(data_type, 'type', None)
      if atomic_type is not None:
          return atomic_type
  
      return _PREDEFINED_ATOMIC_NUMPY_TYPES[_find_base_type(data_type)]
docs: Retrieve the NumPy's `dtype` for a given atomic data type.