XdrClaimOfferAtom constructor Null safety
Implementation
XdrClaimOfferAtom(this._sellerID, this._offerID, this._assetSold,
this._amountSold, this._assetBought, this._amountBought);
XdrClaimOfferAtom(this._sellerID, this._offerID, this._assetSold,
this._amountSold, this._assetBought, this._amountBought);