<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def create_v4flowspec_actions(actions=None):
 """ Create list of traffic filtering actions for Ipv4 Flow Specification and VPNv4 Flow Specification. `` actions`` specifies Traffic Filtering Actions of Flow Specification as a dictionary type value. Returns a list of extended community values. """

    from ryu.services.protocols.bgp.api.prefix import (
        FLOWSPEC_ACTION_TRAFFIC_RATE,
        FLOWSPEC_ACTION_TRAFFIC_ACTION,
        FLOWSPEC_ACTION_REDIRECT,
        FLOWSPEC_ACTION_TRAFFIC_MARKING,
    )

    # Supported action type for IPv4 and VPNv4.
    action_types = {
        FLOWSPEC_ACTION_TRAFFIC_RATE: BGPFlowSpecTrafficRateCommunity,
        FLOWSPEC_ACTION_TRAFFIC_ACTION: BGPFlowSpecTrafficActionCommunity,
        FLOWSPEC_ACTION_REDIRECT: BGPFlowSpecRedirectCommunity,
        FLOWSPEC_ACTION_TRAFFIC_MARKING: BGPFlowSpecTrafficMarkingCommunity,
    }

    return _create_actions(actions, action_types)