
With --lazy-async-stacks the stack output has changed slightly so updating the expect files to match. This is a follow-up to https://github.com/flutter/flutter/pull/51047 as a preparation for the next engine roll which will start enabling --lazy-async-stacks in JIT mode.
This is a fake package for use by automated testing.
For example, the flutter_tools
package uses this to test flutter test
.