I use assimp fbx importer and I get a list of meshes. but There are materials that are not assigned to some meshes.

I opened the FBX ASCII file and I looked for the material name, I found it is in FBX Connections.

I looked for the documentation, but I don't understand how the FBX connections works, and how would I read it, so that I relate a material to a mesh.

Here is a screenshot of the my FBX file connections