Function ethers::types::transaction::eip712::find_parameter_type

pub fn find_parameter_type(ty: &Type) -> Result<ParamType, TokenStream>

Parse the eth abi parameter type based on the syntax type; this method is copied from https://github.com/gakonst/ethers-rs/blob/master/ethers-contract/ethers-contract-derive/src/lib.rs#L600 with additional modifications for finding byte arrays