# File lib/openshift-origin-controller/lib/openshift/mongo_data_store.rb, line 165
    def delete_usage_record_by_gear_uuid(user_id, gear_uuid, usage_type)
      Rails.logger.debug "MongoDataStore.delete_usage_record_by_gear_uuid(#{user_id}, #{gear_uuid}, #{usage_type})\n\n"
      update( user_collection, { "_id" => user_id },
                               { "$pull" => { "usage_records" => {"gear_uuid" => gear_uuid, "usage_type" => usage_type}}} )
    end