ExtractNameAndVersionFromPackageFullName returns the name and version of a template package, given the full package name.

GetStringOrDefault returns testValue if it is not null, otherwise returns defaultValue.

GetStringOrError returns testValue if it is not null, otherwise returns an error.

ValidateNamespaceSegment validates an image namespace's segment.

ValidateOutputName validates the output name when generating output.

ValidatePackageName validates the given package's name.

ValidatePackageVersion validates the given package version.

MaxOutputNameLength is the maximum number of characters allowed in the output name.