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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_inline_styles(cls, instance):
 """ """

        inline_styles = getattr(cls, 'default_inline_styles', {})
        css_style = instance.glossary.get('inline_styles')
        if css_style:
            inline_styles.update(css_style)
        return inline_styles