Get detailed alert information for an issue

The numeric project identifier.

The alert key is generated by LGTM when it posts an issue create webhook request to an external system using the issue tracker Webhook API. This key is an opaque identifier that tracks the alert's location over time. For example, if a file containing the alert is modified, the SARIF data will reflect the updated location of the alert. Note that the key needs to be URL encoded as it may contain characters that are not web-safe.