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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 parse_value(self, tup_tree):
 """ Parse a VALUE element and return its text content as a unicode string. Whitespace is preserved. The conversion of the text representation of the value to a CIM data type object requires CIM type information which is not available on the VALUE element and therefore will be done when parsing higher level elements that have that information. :: <!ELEMENT VALUE (#PCDATA)> """


        self.check_node(tup_tree, 'VALUE', (), (), (), allow_pcdata=True)

        return self.pcdata(tup_tree)