Gets and sets the property Subject. 
            
The subject of the message: A short summary of the content, which will appear in the recipient's inbox.
 Declaration Syntax
 Declaration Syntax| C# | 
public Content Subject { get; set; }
The subject of the message: A short summary of the content, which will appear in the recipient's inbox.
 Declaration Syntax
 Declaration Syntax| C# | 
public Content Subject { get; set; }