setPrice: AugmentedSubmittable<(collection: u32 | AnyNumber | Uint8Array, item: u32 | AnyNumber | Uint8Array, price: Option<u128> | null | Uint8Array | u128 | AnyNumber, whitelistedBuyer: Option<MultiAddress> | null | Uint8Array | MultiAddress | { Id: any } | { Index: any } | { Raw: any } | { Address32: any } | { Address20: any } | string) => SubmittableExtrinsic<ApiType>, [u32, u32, Option<u128>, Option<MultiAddress>]>;