TextNodeFactoryTTextNode - делегат

[NotNullAttribute]
public delegate TTextNode TextNodeFactory<out TTextNode>()
where TTextNode : ITextSyntaxNode

<NotNullAttribute>
Public Delegate Function TextNodeFactory(Of Out TTextNode As ITextSyntaxNode) As TTextNode

[NotNullAttribute]
generic<typename TTextNode>
where TTextNode : ITextSyntaxNode
public delegate TTextNode TextNodeFactory()

[<NotNullAttribute>]
type TextNodeFactory = 
    delegate of unit -> 'TTextNode