export class SetMarginReq { private _symbol!: string; private _marginCoin!: string; private _holdSide!: string; private _amount!: string; get symbol(): string { return this._symbol; } set symbol(value: string) { this._symbol = value; } get marginCoin(): string { return this._marginCoin; } set marginCoin(value: string) { this._marginCoin = value; } get holdSide(): string { return this._holdSide; } set holdSide(value: string) { this._holdSide = value; } get amount(): string { return this._amount; } set amount(value: string) { this._amount = value; } }