Adding menu item to page tree context menu

Hi all,

My task is to create a button refresh like copy paste in the right click of page tree context. I have found very nice and descriptive link given below on the episerver blogs

 
Adding menu item to page tree context menu
http://world.episerver.com/blogs/Tahir-Naveed/Dates/2015/5/adding-menu-item-to-page-tree-context-menu/

I am having episerver 9 on my system but I could not found IfTypeMatches() method declared in the OurDescriptor.cs class.It is giving me complile time error.i am using 3.1.6.186 version of strucutemap.dll

Is there any alternate way to excute this method.

Thank you all for your suggestion

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