Renamed the private graph iterators to attune for upcoming changes

src/models/append_graph.rs

@@ -23,12 +23,12 @@ struct IncidenceEntry {
     adjacent: Vertex,
 }
 
-struct VertexAdjacenceIterator<'a> {
+struct AdjacentVertexIterator<'a> {
     graph: &'a AppendGraph,
     incidence: Option<Incidence>,
 }
 
-impl<'a> Iterator for VertexAdjacenceIterator<'a> {
+impl<'a> Iterator for AdjacentVertexIterator<'a> {
     type Item = Vertex;
 
     fn next(&mut self) -> Option<Self::Item> {
@@ -113,7 +113,7 @@ impl GraphTopology for AppendGraph {
     }
 
     fn adjacent_vertices(&self, v: Self::Vertex) -> impl Iterator<Item = Self::Vertex> {
-        VertexAdjacenceIterator {
+        AdjacentVertexIterator {
             graph: self,
             incidence: self.vertices[v.0].first_incidence,
         }