Fix issue when Solidity method collises with JavaScript prototype (#1432, #2054, #2120).
Fix issue when Solidity method collises with JavaScript prototype (#1432, #2054, #2120).

ethers-io/ethers.js,ethers-io/ethers.js,ethers-io/ethers.js,ethers-io/ethers.js,ethers-io/ethers.js,ethers-io/ethers.js,ethers-io/ethers.js