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