Experiment method `get_section_voxels()` throws AttributeError

[alex-schaaf]

exp = pynoddy.experiment.Experiment("history.his")
exp.get_section_voxels()

Throws:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-310-fdb1209cdcb8> in <module>
----> 2 exp.get_section_voxels()

/pynoddy/pynoddy/output.py in get_section_voxels(self, direction, position, **kwds)
    455         """
    456 
--> 457         data = kwds.get('data',self.block)
    458 
    459         if direction == 'x':

AttributeError: 'Experiment' object has no attribute 'block'

Expected behavior
Get a np.ndarray containing the section lithology ids.

Current workaround

tmp_out = exp.get_section()
section, _ = tmp_out.get_section_voxels()