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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 register_converter(self, converter, conv_type, conv_format=None):
 """ Register custom path parameter converter :param BaseConverter converter: Converter. Subclass of werkzeug's BaseConverter :param str conv_type: Parameter type :param str conv_format: Parameter format (optional) """

        self.flask_plugin.register_converter(converter, conv_type, conv_format)