1 files changed, 6 insertions, 0 deletions
diff --git a/graph/src/adlist.rs b/graph/src/adlist.rs
index 6c1dcd0..ba9afb8 100644
--- a/graph/src/adlist.rs
+++ b/graph/src/adlist.rs
@@ -155,6 +155,12 @@ impl Builder for ALGBuilder {
         self.nodes.len() - 1
     }
 
+    #[inline]
+    fn add_vertices(&mut self, n: usize) {
+        self.nodes
+            .extend(std::iter::repeat_with(ALNode::default).take(n));
+    }
+
     fn add_edge(&mut self, source: usize, target: usize, _label: Self::Label) -> Result<(), Error> {
         let nodes_len = self.nodes.len();