export interface Asset { 
  readonly hash: Hash256String; 
  readonly type: AssetType; 
  readonly name: string; 
  readonly amount: BigNumber; 
  readonly available: BigNumber; 
  readonly precision: number; 
  readonly owner: PublicKeyString; 
  readonly admin: AddressString; 
  readonly issuer: AddressString; 
  readonly expiration: number; 
  readonly frozen: boolean; 
} const asset = readClient.getAsset(Hash256.NEO); 
const neoAmount = asset.amount;