Questions on latest Leo breaking changes notes at `/documentation/leo /17_testnet_beta.md`

[zklim]

1. In the new async await model import example, is the code

   
   import foo.aleo;

program bar.aleo { async transition baz(...) -> (foo.aleo/credit, Future) { ... let (c, f): (foo.aleo/credit, Future) = foo.aleo/bar(...); ... return c then finalize(f, ...); } finalize bar(f: Future, ...) { f.await(); ... } }

should be written as

import foo.aleo;

program bar.aleo { async transition baz(...) -> (foo.aleo/credit, Future) { ... let (c, f): (foo.aleo/credit, Future) = foo.aleo/bar(...); ... return (c, bar(f, ...)); } async function bar(f: Future, ...) { f.await(); ... } }

based on what has been demonstrated in the previous section?

2. What's the reason of having restriction per transaction for on-chain execution? And is this limit not applicable to off-chain execution (transfer_private)?
`the maxmimum number of micro-credits your transaction can consume for on-chain execution is 100_000_000.. If your program exceeds this, consider optimizing on-chain components of your Leo code.`

3. Is the `testnet3` in url shown in query result correct if the latest API endpoint is `http://api.explorer.aleo.org/v1/testnet` ?