export declare class RiskUnits { 'symbol'?: string; 'spotInUse'?: string; 'maintainMargin'?: string; 'initialMargin'?: string; 'delta'?: string; 'gamma'?: string; 'theta'?: string; 'vega'?: string; static discriminator: string | undefined; static attributeTypeMap: Array<{ name: string; baseName: string; type: string; }>; static getAttributeTypeMap(): { name: string; baseName: string; type: string; }[]; }