public IPsiSourceFile GetOrCreateSourceFile([NotNull] FileSystemPath path)
{
Assertion.Assert(path.IsAbsolute, "path.IsAbsolute");
return(SourceFiles.GetOrAdd(path, _ => new T4OutsideSolutionSourceFile(
ProjectFileExtensions,
PsiProjectFileTypeCoordinator,
PsiModule,
path,
sf => sf.Location.ExistsFile,
sf => new T4OutsideSolutionSourceFileProperties(),
DocumentManager,
EmptyResolveContext.Instance)
));
}