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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 sarea_(self, col, x=None, y=None, rsum=None, rmean=None):
 		""" 		Get an stacked area chart 		"""

		try:
			charts = self._multiseries(col, x, y, "area", rsum, rmean)
			return hv.Area.stack(charts)
		except Exception as e:
			self.err(e, self.sarea_, "Can not draw stacked area chart")