FlowSlot扩展关联FlowRuleManager.getFlowRuleMap()问题

在扩展FlowSlot后，会关联FlowRuleManager.getFlowRuleMap()，但是在FlowRuleManager中getFlowRuleMap是private，请问这种应该如何解决，或者如何正确的扩展FlowSlot？
谢谢！

Start by reading the FlowSlot extension points and FlowRuleManager.getFlowRuleMap() usage to understand why an extension needs this private method. Determine the supported way to extend FlowSlot or expose the required rule access, with documentation or tests showing the completed extension path.

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