allow debug output

tools/nuget-download-package/main.go

@@ -230,6 +230,9 @@ func decidePackageVersion(frameworkVersion, packageVersion string, indexJsons, i
 									}
 								}
 							} else {
+								if debugOutput {
+									log.Println("WARNING: This version has no dependency information at all. Can not process, mark as possible OK. ")
+								}
 								// no dependencyGroups at all
 								thisPkgVersionIsPossibleOk = true
 							}