public static IReadOnlyList<Tuple<string,string>> GetRecentProjectsEx()

IReadOnlyList<Tuple<string, string>> result = [];
//A list of Tuple instances containing two strings.
//The first string: full path to the .aprx. In case of Portal projects, 
//this is the cached location of the project on the local machine.
//Second string:  url for portal projects
result = Project.GetRecentProjectsEx();
foreach (var project in result)
{
  string projectPath;
  string projectName;
  string projectUrl;
  if (!string.IsNullOrEmpty(project.Item2))
  {
    //this is a portal project
    //Url
    projectUrl = project.Item2;
    //local cached location of the portal project
    projectPath = project.Item1;
  }
  else
  {
    //this is a local project
    //path to local project
    projectPath = project.Item1;
  }
  projectName = new FileInfo(project.Item1).Name;
}