The account that signs and owns the outer Batch (pays the outer fee).
OptionalbatchOuter Batch flags. Defaults to tfAllOrNothing (atomic).
The inner transactions in execution order. Array order is the on-ledger apply
order: the assembler assigns each inner its position-derived sequence and threads
predicted balance state through same-(account, token) operations.
OptionalsignersExtra signatures the outer fee must cover, forwarded to client.autofill: the
outer account's own multisign signers, plus one for each co-signing participant
(or that participant's signer count when multisigned). Omit for a
single-signed, single-account Batch.
OptionalsponsorExtra signatures the outer fee must cover for a multisigned sponsor, forwarded
to client.autofill: the signer count of the outer Batch's SponsorSignature.
Omit when not sponsored, or when the sponsor signs with a single key.
Inputs for prepareConfidentialBatch.