void IDesignerVerbProviderService.AddVerbProvider(IDesignerVerbProvider verbProvider)
 {
     if (!this.designerVerbProviders.Contains(verbProvider))
     {
         this.designerVerbProviders.Add(verbProvider);
     }
 }
 void IDesignerVerbProviderService.AddVerbProvider(IDesignerVerbProvider verbProvider)
 {
     if (!this.designerVerbProviders.Contains(verbProvider))
     {
         this.designerVerbProviders.Add(verbProvider);
     }
 }
 void IDesignerVerbProviderService.RemoveVerbProvider(IDesignerVerbProvider verbProvider)
 {
     this.designerVerbProviders.Remove(verbProvider);
 }
 void IDesignerVerbProviderService.RemoveVerbProvider(IDesignerVerbProvider verbProvider)
 {
     this.designerVerbProviders.Remove(verbProvider);
 }