[blockchain/ethereum/Uniswap/v2/WETH addresses]
Holds WETH addresses on different supported networks
Input ports
network:
("mainnet" or "ropsten" or "rinkeby" or "goerli" or "kovan")
Receives the name of the Ethereum network to use
Output ports
WETH address: string
Sends out the WETH address on the specified network.
