How to use ModifyMetadata attributes parameter

Hi! Can somebody explain to me how exactly to use the second parameter from the ModifyMetadata method?

In the documentation the description states: "The custom attributes attached to the model class."

What is the model class?

I have a propertylike this:

[EditorDescriptor(EditorDescriptorType = typeof(LinkItemLiteEditor))]
public virtual LinkItemCollection Links{ get; set; }

And I would like to add some parameters to be used in the ModifyMetadata method. Is it possible?

The goal is to use different linkItem editors for different LinkItemCollection properties.