PowerArgs.Cli.PowerArgsRichCommandLineReader.FindNewTabCompletionHooks C# (CSharp) Method

        private static IEnumerable<ISmartTabCompletionSource> FindNewTabCompletionHooks(CommandLineArgumentsDefinition definition)
        {
            List<ISmartTabCompletionSource> completionSources = new List<ISmartTabCompletionSource>();

            if (definition.Metadata.HasMeta<TabCompletion>() && definition.Metadata.Meta<TabCompletion>().CompletionSourceType != null && definition.Metadata.Meta<TabCompletion>().CompletionSourceType.GetInterfaces().Contains(typeof(ISmartTabCompletionSource)))
            {
                completionSources.Add((ISmartTabCompletionSource)Activator.CreateInstance(definition.Metadata.Meta<TabCompletion>().CompletionSourceType));
            }

            foreach (var argument in definition.AllGlobalAndActionArguments)
            {
                foreach (var argSource in argument.Metadata.Metas<ArgumentAwareTabCompletionAttribute>())
                {
                    var source = argSource.CreateTabCompletionSource(definition, argument);
                    if (source is ISmartTabCompletionSource)
                    {
                        completionSources.Insert(0, (ISmartTabCompletionSource)source);
                    }
                }

                if (argument.ArgumentType.IsEnum)
                {
                    completionSources.Insert(0, new EnumTabCompletionSource(argument));
                }
            }
            completionSources.Add(new ActionAndArgumentSmartTabCompletionSource());
            completionSources.Add(new FileSystemTabCompletionSource());

            return completionSources;
        }