How to use the xlsxwriter.shape.Shape._get_gradient_properties function in XlsxWriter

line = Shape._get_line_properties(user_point.get('line'))

                # Allow 'border' as a synonym for 'line'.
                if 'border' in user_point:
                    line = Shape._get_line_properties(user_point['border'])

                # Set the fill properties for the chartarea.
                fill = Shape._get_fill_properties(user_point.get('fill'))

                # Set the pattern fill properties for the series.
                pattern = \
                    Shape._get_pattern_properties(user_point.get('pattern'))

                # Set the gradient fill properties for the series.
                gradient = \
                    Shape._get_gradient_properties(user_point.get('gradient'))

                # Pattern fill overrides solid fill.
                if pattern:
                    self.fill = None

                # Gradient fill overrides the solid and pattern fill.
                if gradient:
                    pattern = None
                    fill = None

                point['line'] = line
                point['fill'] = fill
                point['pattern'] = pattern
                point['gradient'] = gradient

            points.append(point)

# Set the line properties for the chartarea.
        line = Shape._get_line_properties(options.get('line'))

        # Allow 'border' as a synonym for 'line'.
        if options.get('border'):
            line = Shape._get_line_properties(options['border'])

        # Set the fill properties for the chartarea.
        fill = Shape._get_fill_properties(options.get('fill'))

        # Set the pattern fill properties for the series.
        pattern = Shape._get_pattern_properties(options.get('pattern'))

        # Set the gradient fill properties for the series.
        gradient = Shape._get_gradient_properties(options.get('gradient'))

        # Pattern fill overrides solid fill.
        if pattern:
            self.fill = None

        # Gradient fill overrides the solid and pattern fill.
        if gradient:
            pattern = None
            fill = None

        # Set the plotarea layout.
        layout = self._get_layout_properties(options.get('layout'), False)

        area['line'] = line
        area['fill'] = fill
        area['pattern'] = pattern

# Set the line properties for the marker.
        line = Shape._get_line_properties(marker.get('line'))

        # Allow 'border' as a synonym for 'line'.
        if 'border' in marker:
            line = Shape._get_line_properties(marker['border'])

        # Set the fill properties for the marker.
        fill = Shape._get_fill_properties(marker.get('fill'))

        # Set the pattern fill properties for the series.
        pattern = Shape._get_pattern_properties(marker.get('pattern'))

        # Set the gradient fill properties for the series.
        gradient = Shape._get_gradient_properties(marker.get('gradient'))

        # Pattern fill overrides solid fill.
        if pattern:
            self.fill = None

        # Gradient fill overrides the solid and pattern fill.
        if gradient:
            pattern = None
            fill = None

        marker['line'] = line
        marker['fill'] = fill
        marker['pattern'] = pattern
        marker['gradient'] = gradient

        return marker

Returns:
            Nothing.

        """
        if options is None:
            options = {}

        line = Shape._get_line_properties(options.get('line'))
        fill = Shape._get_fill_properties(options.get('fill'))

        # Set the pattern fill properties for the series.
        pattern = Shape._get_pattern_properties(options.get('pattern'))

        # Set the gradient fill properties for the series.
        gradient = Shape._get_gradient_properties(options.get('gradient'))

        # Pattern fill overrides solid fill.
        if pattern:
            self.fill = None

        # Gradient fill overrides the solid and pattern fill.
        if gradient:
            pattern = None
            fill = None

        self.hi_low_lines = {'line': line,
                             'fill': fill,
                             'pattern': pattern,
                             'gradient': gradient}

# Set the line properties for the legend.
        line = Shape._get_line_properties(options.get('line'))

        # Allow 'border' as a synonym for 'line'.
        if options.get('border'):
            line = Shape._get_line_properties(options['border'])

        # Set the fill properties for the legend.
        fill = Shape._get_fill_properties(options.get('fill'))

        # Set the pattern fill properties for the series.
        pattern = Shape._get_pattern_properties(options.get('pattern'))

        # Set the gradient fill properties for the series.
        gradient = Shape._get_gradient_properties(options.get('gradient'))

        # Pattern fill overrides solid fill.
        if pattern:
            self.fill = None

        # Gradient fill overrides the solid and pattern fill.
        if gradient:
            pattern = None
            fill = None

        # Set the legend layout.
        layout = self._get_layout_properties(options.get('layout'), False)

        legend['line'] = line
        legend['fill'] = fill
        legend['pattern'] = pattern