Return a superstructure like s with object o added. If o is a collection, return a superstructure like s with each element of o added. If only one argument is supplied it will be assumed to represent o and a new superstructure will be returned.

It is an error (and an exception may be thrown) if

1. s is not a map;
2. o is not a map, or a sequence of maps.

Return a superstructure like s in which object o is indexed by vertex v. It is an error (and an exception may be thrown) if

1. s is not a map;
2. o is not a map;
3. o does not have a value for the key :id;
4. v is not a vertex.

Return a superstructure like s in which object o is indexed by its vertices. It is an error (and an exception may be thrown) if

1. s is not a map;
2. o is not a map;
3. o does not have a value for the key :id.