diff --git a/internal/config/dag/dag.go b/internal/config/dag/dag.go
index b90e5bd..46c7676 100644
--- a/internal/config/dag/dag.go
+++ b/internal/config/dag/dag.go
@@ -95,12 +95,15 @@ func (d *DAG) getVertexID(s string) string {
 	return ""
 }
 
+// WalkFunc represents a function that implements a visitor.
 type WalkFunc func(vertexID string, vertex interface{})
 
+// Visit executes the visitor function.
 func (fn WalkFunc) Visit(v hdag.Vertexer) {
 	fn(v.Vertex())
 }
 
+// DFSWalk walks the [DAG] using a depth first strategy.
 func (d *DAG) DFSWalk(fn WalkFunc) {
 	d.dag.DFSWalk(fn)
 }