GithubIssueTimelineModelMirrorRefPath typedef
GithubIssueTimelineModelMirrorRefPath = _$GithubIssueTimelineModelMirrorRefPath
It can be defined as an empty ModelRef<GithubIssueTimelineModel>.
GithubIssueTimelineModelMirrorRefPath("xxx") // Define as a path.
Implementation
typedef GithubIssueTimelineModelMirrorRefPath
= _$GithubIssueTimelineModelMirrorRefPath;