SampleGen: C# region tag location

[yihanzhen]

Now, C# samples go like:

// License
// Generated sample, do not edit!

use CommandLine;

// [START region_tag]
namespace Com.Google.Cloud.Language.Samples
{
    import ...;
    import ...;

    public class SampleAnalyzeText
    {
        public static void SampleAnalyzeText(...)
        {
            ...
        }
        // [END region_tag]

        public static void Main()
        {
            // process command line arguments

            SampleAnalyzeText(param1, param2);
        }
    }
}

Start tag and end tag are not at the same level, which will cause samples on devsite to miss closing braces.

Found in: #2872

[yihanzhen]

Proposing changes:

// License
// Generated sample, do not edit!

use CommandLine;


namespace Com.Google.Cloud.Language.Samples
{
    // [START region_tag]
    import ...;
    import ...;

    public class SampleAnalyzeText
    {
        public static void SampleAnalyzeText(...)
        {
            ...
        }
    }
    // [END region_tag]

    public class Main
    {
        public static void Main()
        {
            // process command line arguments
            SampleAnalyzeText.SampleAnalyzeText(param1, param2);
        }
    }
}

Since the Main method is just for testing and is not displayed on devsite.

[yihanzhen]

cc/ @beccasaurus @vchudnov-g

[vchudnov-g]

LOL. I just left you a comment in the PR review.

Yes, I really think the region tags should be properly nested within the braces. What you suggest sounds good to me. (Or even just having the tags around the sample function, though that misses the imports, IIUC, which is not as good)

@beccasaurus , wdyt?