Python: After linking texture to material how do I add it to blenders texture list?

So I have created an image texture using python in 2.80, and linked it to the material and that shows fine.

However in the property editor under texture it does not show up in the list.

I tried many things, and cannot find an answer online.

Does anyone know how to do that?

texIm = material.node_tree.nodes.new('ShaderNodeTexImage')
texIm.image = self.loadImage("test")
#how to add that to the texture list in property editor?