Consider an API following the guidance from https://cloud.google.com/apis/design/resources. Your API is modeled as collections of individually-addressable resources (the nouns of the API). For example, you could have a root /widgets collection which contains individual widgets, e.g. /widgets/72. Some operations apply to the /widgets collection, e.g. List, and some operations apply to the an individual widget, e.g Get or Update. Do you have any guidance on SpiceDB schema design for collections vs elements of collections?