'Declaration
<EditorBrowsableAttribute(EditorBrowsableState.Never)> Public MustInherit Class DropDownBuilder (Of TControl As DropDown, TBuilder As DropDownBuilder(Of TControl,TBuilder)) Inherits FormInputBaseBuilder(Of TControl,TBuilder)
[EditorBrowsable(EditorBrowsableState.Never)] public abstract class DropDownBuilder<TControl,TBuilder> : FormInputBaseBuilder<TControl,TBuilder> where TControl: DropDown where TBuilder: DropDownBuilder<TControl,TBuilder>