public ProjectGraphNode GetOrAdd(Project project, bool isSolutionProject)
{
var node = AllNodes.TryGet(project.FullPath) ??
AddNode(new ProjectGraphNode(project, this), isSolutionProject);
if (isSolutionProject && !SolutionProjects.Contains(node))
{
SolutionProjects.Add(node);
}
return(node);
}
