public string Description {get; set;}

// Creates new table templates for the specified standalone table.
await QueuedTask.Run(() =>
{
  var table = activeMap.GetStandaloneTablesAsFlattenedList().FirstOrDefault();
  var tableTemplate = table.GetTemplate("Template1");

  var definition = tableTemplate.GetDefinition();
  definition.Description = "New definition";
  definition.Name = "New name";
  //Create new table template using this definition
  table.CreateTemplate(definition);

  //You can also create a new table template using this extension method. You can use this method the same way you use the layer.CreateTemplate method.
  table.CreateTemplate("New template name", "Template description", tags: ["tag 1", "tag 2"]);
});

// Updates the definition of a specified table template by modifying its name and description.
var table = activeMap.GetStandaloneTablesAsFlattenedList().FirstOrDefault();
await QueuedTask.Run(() =>
  {
    // get a table template
    var tableTemplate = table.GetTemplate("Template1") ?? throw new Exception("No table template named 'Template1' found");
    // get the definition
    var definition = tableTemplate.GetDefinition();
    definition.Description = "New definition";
    definition.Name = "New name";
    // update the definition
    tableTemplate.SetDefinition(definition);
  });