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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_definition(self):
 """Checks variable and executable code elements based on the current context for a code element whose name matches context.exact_match perfectly. """

        #Check the variables first, then the functions.
        match = self._bracket_exact_var(self.context.exact_match)
        if match is None:
           match = self._bracket_exact_exec(self.context.exact_match)

        return match