workForFaction() Netscript Function
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.. js:function:: workForFaction(sleeveNumber, factionName, factionWorkType)

    :param int sleeveNumber: index of the sleeve to work for the faction.
    :param string factionName: name of the faction to work for.
    :param string factionWorkType: name of the action to perform for this faction.

    Return a boolean indicating whether or not the sleeve started working or this faction.