corda / net.corda.flows / TwoPartyDealFlow / Instigator / progressTracker

# progressTracker

`open val progressTracker: ProgressTracker`

Overrides Primary.progressTracker

Override this to provide a ProgressTracker. If one is provided and stepped, the framework will do something helpful with the progress reports. If this flow is invoked as a subflow of another, then the tracker will be made a child of the current step in the parent. If it's null, this flow doesn't track progress.

Note that this has to return a tracker before the flow is invoked. You can't change your mind half way through.