/**
 * Retrieves batch data for a list of bill NFT IDs from the API.
 * @param apiV2URL - prod or staging url to get NFT data from.
 * @param billNftIds - An array of bill NFT IDs to retrieve data for.
 * @param billNftAddress - The address of the bill NFT contract.
 * @param chainId - The ID of the blockchain network to retrieve data from.
 * @returns A Promise that resolves to the batch data for the specified bill NFT IDs, or null if an error occurs.
 */
export declare const getBillNftBatchData: (apiV2URL: string, billNftIds: string[], billNftAddress: string, chainId: number, isVestingNFT?: boolean) => Promise<any>;