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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 clear_highlight(self, src_id, line_start=0, line_end=-1, async_=None, **kwargs):
 """Clear highlights from the buffer."""

        async_ = check_async(async_, kwargs, True)
        self.request('nvim_buf_clear_highlight', src_id,
                     line_start, line_end, async_=async_)