This video will demonmstrate how to implement the ICustomWidgetVisualization interface for Sitefinity 4 Widgets to display an special editor icon and hyperlink in designtime
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="Telerik.Sitefinity" publicKeyToken="b28c218413bdf563" />
<bindingRedirect oldVersion="4.1.1426.0" newVersion="4.1.1574.0"/>
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Telerik.Sitefinity.Model" publicKeyToken="b28c218413bdf563" />
<bindingRedirect oldVersion="4.1.1426.0" newVersion="4.1.1574.0"/>
</dependentAssembly>
</assemblyBinding>