diff --git a/crates/codegen/runtime/cargo/src/runtime/bindings/mod.rs b/crates/codegen/runtime/cargo/src/runtime/bindings/mod.rs
index e6a1ceb5e4..0459f0540f 100644
--- a/crates/codegen/runtime/cargo/src/runtime/bindings/mod.rs
+++ b/crates/codegen/runtime/cargo/src/runtime/bindings/mod.rs
@@ -1,8 +1,8 @@
 #[path = "generated/binding_rules.rs"]
 mod binding_rules;
 
-use metaslang_graph_builder::{ast, ParseError};
 pub use metaslang_graph_builder::functions::Functions;
+use metaslang_graph_builder::{ast, ParseError};
 pub use metaslang_graph_builder::{ExecutionConfig, ExecutionError, NoCancellation, Variables};
 
 use crate::cst::KindTypes;
diff --git a/crates/metaslang/graph_builder/src/graph.rs b/crates/metaslang/graph_builder/src/graph.rs
index 4bc51cfc58..233e5b97e8 100644
--- a/crates/metaslang/graph_builder/src/graph.rs
+++ b/crates/metaslang/graph_builder/src/graph.rs
@@ -689,7 +689,7 @@ impl std::fmt::Debug for SyntaxNodeRef {
 
 /// A reference to a graph node
 #[derive(Clone, Copy, Eq, Hash, Ord, PartialEq, PartialOrd)]
-pub struct GraphNodeRef(pub GraphNodeID);
+pub struct GraphNodeRef(GraphNodeID);
 
 impl GraphNodeRef {
     /// Returns the index of the graph node that this reference refers to.
diff --git a/crates/solidity/outputs/cargo/tests/Cargo.toml b/crates/solidity/outputs/cargo/tests/Cargo.toml
index d411646ff9..a00b4faa13 100644
--- a/crates/solidity/outputs/cargo/tests/Cargo.toml
+++ b/crates/solidity/outputs/cargo/tests/Cargo.toml
@@ -19,7 +19,7 @@ infra_utils = { workspace = true }
 once_cell = { workspace = true }
 regex = { workspace = true }
 semver = { workspace = true }
-slang_solidity = { workspace = true, features = ["__private_ariadne"] }
+slang_solidity = { workspace = true, features = ["__private_ariadne", "__experimental_bindings_api"] }
 solidity_language = { workspace = true }
 strum_macros = { workspace = true }
 
diff --git a/crates/solidity/outputs/cargo/tests/src/graph_output/mod.rs b/crates/solidity/outputs/cargo/tests/src/graph_output/mod.rs
index 6b971a520d..5ed945a9a3 100644
--- a/crates/solidity/outputs/cargo/tests/src/graph_output/mod.rs
+++ b/crates/solidity/outputs/cargo/tests/src/graph_output/mod.rs
@@ -1,3 +1,6 @@
+use std::fmt;
+use std::fs::{self, create_dir_all};
+
 use anyhow::Result;
 use infra_utils::cargo::CargoWorkspace;
 use infra_utils::paths::FileWalker;
@@ -6,8 +9,6 @@ use slang_solidity::bindings::{
     get_stack_graph_builder, ExecutionConfig, Functions, Graph, NoCancellation, Variables,
 };
 use slang_solidity::language::Language;
-use std::fmt;
-use std::fs::{self, create_dir_all};
 
 #[test]
 pub fn run_all() -> Result<()> {
@@ -51,28 +52,28 @@ fn run(file_name: &str) -> Result<()> {
     Ok(())
 }
 
-fn print_graph_as_mermaid<'a>(graph: &'a Graph) -> impl fmt::Display + 'a {
+fn print_graph_as_mermaid(graph: &Graph) -> impl fmt::Display + '_ {
     struct DisplayGraph<'a>(&'a Graph);
 
     impl<'a> fmt::Display for DisplayGraph<'a> {
         fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
             let graph = self.0;
-            write!(f, "graph TD\n")?;
+            writeln!(f, "graph TD")?;
             for node in graph.iter_nodes() {
                 let gn = &graph[node];
                 let node_label = if let Some(symbol) = gn.attributes.get("symbol") {
                     symbol.to_string()
                 } else {
-                    format!("{}", node.0)
+                    format!("{}", node.index())
                 };
                 let node_type = gn.attributes.get("type").and_then(|x| x.as_str().ok());
                 match node_type {
-                    Some("push_symbol") => write!(f, "\tN{}[/{}\\]\n", node.0, node_label)?,
-                    Some("pop_symbol") => write!(f, "\tN{}[\\{}/]\n", node.0, node_label)?,
-                    _ => write!(f, "\tN{}[{}]\n", node.0, node_label)?,
+                    Some("push_symbol") => writeln!(f, "\tN{}[/{}\\]", node.index(), node_label)?,
+                    Some("pop_symbol") => writeln!(f, "\tN{}[\\{}/]", node.index(), node_label)?,
+                    _ => writeln!(f, "\tN{}[{}]", node.index(), node_label)?,
                 }
                 for (sink, _edge) in gn.iter_edges() {
-                    write!(f, "\tN{} --> N{}\n", node.0, sink.0)?;
+                    writeln!(f, "\tN{} --> N{}", node.index(), sink.index())?;
                 }
             }
             Ok(())
diff --git a/crates/solidity/outputs/cargo/tests/src/lib.rs b/crates/solidity/outputs/cargo/tests/src/lib.rs
index ef40326fab..c3ce8042c9 100644
--- a/crates/solidity/outputs/cargo/tests/src/lib.rs
+++ b/crates/solidity/outputs/cargo/tests/src/lib.rs
@@ -1,6 +1,6 @@
 #![cfg(test)]
 
 mod cst_output;
-mod graph_output;
 mod doc_examples;
+mod graph_output;
 mod trivia;