How to use the pook.matchers.base.BaseMatcher.__init__ function in pook

def __init__(self, schema):
        BaseMatcher.__init__(self, schema)

        if isinstance(schema, str):
            self.expectation = json.loads(schema)

def __init__(self, headers):
        if not isinstance(headers, dict):
            raise TypeError('headers must be a dictionary')
        BaseMatcher.__init__(self, headers)

def __init__(self, data):
        BaseMatcher.__init__(self, data)

        if isinstance(data, str):
            self.expectation = xmltodict.parse(data)

def __init__(self, data):
        BaseMatcher.__init__(self, data)

        if isinstance(data, str):
            self.expectation = json.loads(data)