/// <summary>
/// Applies the placeholders to the body and the subject properties
/// </summary>
/// <param name="mailTemplate"></param>
/// <param name="logger"></param>
/// <returns></returns>
public async Task <Data.MailTemplate> ApplyPlaceholdersAsync(Data.MailTemplate mailTemplate, System.IO.TextWriter logger = null)
{
var placeholderGroupReplacements = mailTemplate.PlaceholderGroupList.PlaceholderGroupDictionary.Values.ToList();
var placeholderReplacements = mailTemplate.PlaceholderList.PlaceholderDictionary.Values.ToList();
var optionalSectionsReplacements = mailTemplate.OptionalSections;
return(await _placeholderLogic.ApplyPlaceholdersAsync(mailTemplate, placeholderGroupReplacements, placeholderReplacements, optionalSectionsReplacements, logger));
}