MiddleName property
      
      String?
      get
      MiddleName
      
    
    
Implementation
String? get MiddleName =>
    this.PropertyBag[ContactSchema.MiddleName] as String?;
      
      set
      MiddleName
      (String? value) 
      
    
    
    
Implementation
set MiddleName(String? value) =>
    this.PropertyBag[ContactSchema.MiddleName] = value;