The undertaking entered into pursuant to § 40-10-107 may be in substance as follows:
State of Tennessee,
County of ______________
We, A. B., C. D., and E. F., witnesses against G. H., charged with a public offense, do each bind ourselves to appear at the next term of the (circuit) court of ______________ County, on the second day of the term, to give evidence against G. H., and, in case of failure, to pay the state of Tennessee two hundred fifty dollars ($250).
This ______________ day of ______________, 20____________________.
______________A. B.,
______________C.D.,
______________E.F.
T.C.A. § 40-10-108