'Declaration
<DataMemberAttribute()> Public Property ExecutionHistoryStepOID As Nullable(Of Guid)
[DataMember()] public Nullable<Guid> ExecutionHistoryStepOID {get; set;}
[DataMember()] public: property Nullable<Guid> ExecutionHistoryStepOID { Nullable<Guid> get(); void set ( Nullable<Guid> value); }