Contracts originally were required to return a start function. At some point, we changed the name to prepare to signal upgradeability. #8045 changed it back to start, but included support for prepare for backwards compatibility. The use of meta to contain details of the upgradeability didn't make it into the docs.
Contracts originally were required to return a
startfunction. At some point, we changed the name toprepareto signal upgradeability. #8045 changed it back to start, but included support forpreparefor backwards compatibility. The use ofmetato contain details of the upgradeability didn't make it into the docs.Change the documentation on contract upgrade to specify
start, and to describe the use ofmeta.