Account constructor Null safety
Implementation
Account(this._accountId, this._mSequenceNumber,
{int? muxedAccountMed25519Id}) {
this._muxedAccount = MuxedAccount(this._accountId, muxedAccountMed25519Id);
}
Account(this._accountId, this._mSequenceNumber,
{int? muxedAccountMed25519Id}) {
this._muxedAccount = MuxedAccount(this._accountId, muxedAccountMed25519Id);
}