meta/bundle.go
func (b *Bundle) Changes(target xdr.LedgerKey) (ret []xdr.LedgerEntryChange) {
	return b.changes(target, math.MaxInt32)
}
func (b *Bundle) Changes(target xdr.LedgerKey) (ret []xdr.LedgerEntryChange) {
	return b.changes(target, math.MaxInt32)
}
// Changes returns any changes within the bundle that apply to the entry
// identified by `key`.