/// <summary>
/// Return all possibly valid project names in the current solution. This includes all
/// unique names and safe names.
/// </summary>
/// <returns></returns>
private async Task <IEnumerable <string> > GetAllValidProjectNamesAsync()
{
var nugetProjects = await VsSolutionManager.GetNuGetProjectsAsync();
var safeNames = await Task.WhenAll(nugetProjects?.Select(p => VsSolutionManager.GetNuGetProjectSafeNameAsync(p)));
var uniqueNames = nugetProjects?.Select(p => NuGetProject.GetUniqueNameOrName(p));
return(uniqueNames.Concat(safeNames).Distinct());
}