Returns a slice of the input tensor along multiple axes.

def _slice(attrs, inputs, proto_obj):
    """Returns a slice of the input tensor along multiple axes."""
    new_attrs = translation_utils._fix_attribute_names(attrs,
                                                       {'axes' : 'axis',
                                                        'ends' : 'end',
                                                        'starts' : 'begin'})
    # onnx slice provides slicing on multiple axis. Adding multiple slice_axis operator
    # for multiple axes from mxnet
    begin = new_attrs.get('begin')
    end = new_attrs.get('end')
    axes = new_attrs.get('axis', tuple(range(len(begin))))
    slice_op = symbol.slice_axis(inputs[0], axis=axes[0], begin=begin[0], end=end[0])
    if len(axes) > 1:
        for i, axis in enumerate(axes):
            slice_op = symbol.slice_axis(slice_op, axis=axis, begin=begin[i], end=end[i])
    return slice_op, new_attrs, inputs