code: public void addOutputShipStrategy(ShipStrategyType strategy) {
  		final int outputCnt = this.config.getInteger(OUTPUTS_NUM, 0);
  		this.config.setInteger(OUTPUT_SHIP_STRATEGY_PREFIX + outputCnt, strategy.ordinal());
  		this.config.setInteger(OUTPUTS_NUM, outputCnt + 1);
  	}
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