export function invokeHostFunction(opts: {
    func: xdr.HostFunction;
    auth?: xdr.SorobanAuthorizationEntry[] | undefined;
    source?: string | undefined;
}): xdr.Operation;
export function invokeContractFunction(opts: any): xdr.Operation;
export function createCustomContract(opts: any): xdr.Operation;
export function createStellarAssetContract(opts: any): xdr.Operation;
export function uploadContractWasm(opts: any): xdr.Operation;