How to use the betfairlightweight.utils.api_request function in betfairlightweight

@api_request
def list_current_orders(api, params=None, session=None, exchange=None):
    request = BettingRequest(api, 'SportsAPING/v1.0/listCurrentOrders', params, exchange)
    (response, raw_response, sent) = request(session)
    return process_response(response, raw_response, sent, apiparsedata.CurrentOrders)

@api_request
def list_race_status(api, params=None, session=None, exchange=None):
    request = ScoresRequest(api, 'ScoresAPING/v1.0/listRaceDetails', params)
    (response, raw_response, sent) = request(session)
    return process_response(response, raw_response, sent, apiparsescores.RaceStatus)

@api_request
def place_orders(api, params=None, session=None, exchange=None):  # atomic
    request = OrderRequest(api, 'SportsAPING/v1.0/placeOrders', params, exchange)
    (response, raw_response, sent) = request(session)
    return process_response(response, raw_response, sent, apiparsebetting.PlaceOrder)

@api_request
def list_venues(api, params=None, session=None, exchange=None):
    request = BettingRequest(api, 'SportsAPING/v1.0/listVenues', params, exchange)
    (response, raw_response, sent) = request(session)
    return process_response(response, raw_response, sent, apiparsedata.VenueResult)

@api_request
def list_cleared_orders(api, params=None, session=None, exchange=None):
    request = BettingRequest(api, 'SportsAPING/v1.0/listClearedOrders', params, exchange)
    (response, raw_response, sent) = request(session)
    return process_response(response, raw_response, sent, apiparsedata.ClearedOrders)

@api_request
def list_events(api, params=None, session=None, exchange=None):
    request = BettingRequest(api, 'SportsAPING/v1.0/listEvents', params, exchange)
    (response, raw_response, sent) = request(session)
    return process_response(response, raw_response, sent, apiparsedata.EventResult)

@api_request
def list_market_catalogue(api, params=None, session=None, exchange=None):
    request = BettingRequest(api, 'SportsAPING/v1.0/listMarketCatalogue', params, exchange)
    (response, raw_response, sent) = request(session)
    return process_response(response, raw_response, sent, apiparsedata.MarketCatalogue)

@api_request
def replace_orders(api, params=None, session=None, exchange=None):
    request = OrderRequest(api, 'SportsAPING/v1.0/replaceOrders', params, exchange)
    (response, raw_response, sent) = request(session)
    return process_response(response, raw_response, sent, apiparsebetting.ReplaceOrder)

@api_request
def list_competitions(api, params=None, session=None, exchange=None):
    request = BettingRequest(api, 'SportsAPING/v1.0/listCompetitions', params, exchange)
    (response, raw_response, sent) = request(session)
    return process_response(response, raw_response, sent, apiparsedata.CompetitionResult)

@api_request
def get_account_funds(api, params=None, session=None, exchange=None):
    request = AccountRequest(api, 'AccountAPING/v1.0/getAccountFunds', params, exchange)
    (response, raw_response, sent) = request(session)
    return process_response(response, raw_response, sent, apiparseaccount.AccountFunds)