'Declaration
<System.ComponentModel.CategoryAttribute("Results")> <System.ComponentModel.DescriptionAttribute("Collection of matching mail headers")> Public Property HeaderList As System.Activities.OutArgument(Of List(Of JAMSMailMessageInfo))
'Usage
Dim instance As GetMailHeaderList Dim value As System.Activities.OutArgument(Of List(Of JAMSMailMessageInfo)) instance.HeaderList = value value = instance.HeaderList
[System.ComponentModel.Category("Results")] [System.ComponentModel.Description("Collection of matching mail headers")] public System.Activities.OutArgument<List<JAMSMailMessageInfo>> HeaderList {get; set;}