[{"inputs":[{"internalType":"contract IFxStateChildTunnel","name":"_fxChild","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"fxChild","outputs":[{"internalType":"contract IFxStateChildTunnel","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getRate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]