(Bloomberg) Bank Indonesia kept its key rate at a four-year high to shield the rupiah ahead of a widely expected tightening by the US central bank, while lowering reserve requirement for some lenders to boost credit expansion, signaling that it’s keeping a close eye on economic growth.Most Read from BloombergThe Bear Market Has Nearly Been Erased, Fewer Than 20 Months After It BeganPutin Warns Poland Over ‘Aggression’ Against Ally BelarusUS Recession Becomes Closer Call as Economists Rethink