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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 make_tag(cls, tag_name):
 		""" 		Make a Tag object from a tag name. Registers it with the content manager 		if possible. 		"""

		if cls.cm:
			return cls.cm.make_tag(tag_name)
		return Tag(tag_name.strip())