@Override
	public void invalidateCache(boolean all) {
		lock.acquire();
		try {
			cache.invalidate();
			lengthMgr.invalidate();
			compositeMgr.invalidate();
			protoMgr.clearCache();
		}
		finally {
			lock.release();
		}
	}
Returns the reference manager being used by this code manager.

@return ReferenceManager the reference manager being used by this code manager
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/code/CodeManager.java