Term Store Manipulation Using C# Code in SharePoint App Model

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Taxonomy;
namespace TestTermStore
{
    class Program
    {
        static void Main(string[] args)
        {
            using (SPSite site = new SPSite("http://sharepoint"))
            {
                //instantiate a new session to a site
                TaxonomySession sesssion = new TaxonomySession(site);

                //Get the term store
                TermStore NauticalStore = sesssion.TermStores["Managed Metadata Service"];

                //Create a new term group
                Group Costal = NauticalStore.CreateGroup("Costal Sailing");

                //Create a new term set
                TermSet termSetClasses = Costal.CreateTermSet("Class Types");

                //Add terms
                Term term1 = termSetClasses.CreateTerm("Sail Trimming", 1033);
                Term term2 = termSetClasses.CreateTerm("Anchoring", 1033);
                Term term3 = termSetClasses.CreateTerm("Cruising", 1033);
                Term term4 = termSetClasses.CreateTerm("Deep Water", 1033);
                Term term5 = termSetClasses.CreateTerm("Navigation", 1033);
                Term term6 = termSetClasses.CreateTerm("GPS", 1033);
                Term term7 = termSetClasses.CreateTerm("Sail Repairs", 1033);

                //Commit changes to the store
                NauticalStore.CommitAll();

                //Delte a term
                term1.Delete();

                //set descriptions and labels
                term2.SetDescription("Learn to Anchor Class", 1033);
                term2.CreateLabel("Anchoring", 1033, false);

                NauticalStore.CommitAll();

                Console.WriteLine("Group added...");
                Console.ReadLine();
            }
        }
    }
}