I was wondering what WETH() does on Uniswap forks on other chains, for example if I want to create a liquidity pair on Pancakeswap it might be something like this:
address lpPair = IPancakeFactory(router.factory()).createPair(address(this),router.WETH());
I don't understand what WETH() does here. Does it mean wrapped ETH on BSC, or wrapped BNB, or something else?