def __init__(self, filter_type=None, stop_hash=None, prev_header=None, hashes=None):
    self.filter_type = filter_type
    self.stop_hash = stop_hash
    self.prev_header = prev_header
    self.hashes = hashes
def __init__(self, filter_type=None, stop_hash=None, prev_header=None, hashes=None):
    self.filter_type = filter_type
    self.stop_hash = stop_hash
    self.prev_header = prev_header
    self.hashes = hashes