SF_10.1, SF_10.2, SF_11.0, SF_11.1, SF_11.2, SF_12.0, SF_12.1, SF_12.2, SF_13.0, SF_13.1, SF_13.2, SF_13.3, SF_14.0, SF_14.1, SF_14.2, SF_14.3 - https://docs.sitefinity.com/for-developers-create-document-libraries

CreateLibraryFluentAPI.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;

namespace Telerik.Sitefinity.Documentation.CodeSnippets.DevGuide.SitefinityEssentials.Modules.MediaModules.DocumentsAndFiles.ManagingLibraries
{
    public partial class LibrariesSnippets
    {
        private void CreateDocumentLibraryFluentAPI(Guid documentLibraryId, string documentLibraryTitle)
        {
            //Check whether a library with the same ID already exists.
            var count = 0;
            App.WorkWith().DocumentLibraries().Where(b => b.Id == documentLibraryId).Count(out count);

            if (count == 0)
            {
                //Create the library.
                App.WorkWith().DocumentLibrary().CreateNew(documentLibraryId)
                    //Set the properties of the library.
                .Do(b =>
                {
                    b.Title = documentLibraryTitle;
                    b.DateCreated = DateTime.UtcNow;
                    b.LastModified = DateTime.UtcNow;
                    b.UrlName = Regex.Replace(documentLibraryTitle.ToLower(), @"[^\w\-\!\$\'\(\)\=\@\d_]+", "-");
                })
                    //Save the changes.
                .SaveChanges();
            }
        }
    }
}