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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 visit_Call(self, node, **kwargs):
 """ Handles function calls within code. Function calls in Python are used to represent interface implementations in addition to their normal use. If a call appears to mark an implementation, it gets labeled as such for Doxygen. """

        lineNum = node.lineno - 1
        # Function calls have one Doxygen-significant special case:  interface
        # implementations.
        match = AstWalker.__implementsRE.match(self.lines[lineNum])
        if match:
            self.lines[lineNum] = '{0}## @implements {1}{2}{0}{3}{2}'.format(
                match.group(1), match.group(2), linesep,
                self.lines[lineNum].rstrip())
            if self.options.debug:
                stderr.write("# Implements {0}{1}".format(match.group(1),
                                                          linesep))
        # Visit any contained nodes.
        self.generic_visit(node, containingNodes=kwargs['containingNodes'])