diff --git a/src/uk/ac/ebi/vfb/neo4j/neo4j_tools.py b/src/uk/ac/ebi/vfb/neo4j/neo4j_tools.py
index 6362a4a3..818eadc7 100644
--- a/src/uk/ac/ebi/vfb/neo4j/neo4j_tools.py
+++ b/src/uk/ac/ebi/vfb/neo4j/neo4j_tools.py
@@ -74,46 +74,46 @@ def __init__(self, base_uri, usr, pwd):
             if not self.test_connection():
                 raise Exception("Failed to connect to Neo4j.")
 
-def commit_list(self, statements, return_graphs=False, max_retries=3):
-    """Commit a list of statements to Neo4j DB via REST API.
-    Prints requests status and warnings if any problems with commit.
-        - statements: list of Cypher statements as strings
-        - return_graphs: optionally specify graphs to be returned in JSON results.
-    Errors prompt warnings, not exceptions, and cause return = False.
-    Returns results list of results or False if any errors are encountered."""
-    
-    cstatements = []
-    if return_graphs:
-        for s in statements:
-            cstatements.append({'statement': s, "resultDataContents": ["row", "graph"]})
-    else:
-        for s in statements:
-            cstatements.append({'statement': s})  # Rows and columns are returned by default.
-    payload = {'statements': cstatements}
-    headers = self.headers
-
-    attempt = 0
-    while attempt < max_retries:
-        try:
-            response = requests.post(
-                url=self.base_uri + self.commit,
-                auth=(self.usr, self.pwd),
-                data=json.dumps(payload),
-                headers=headers
-            )
-            if self.rest_return_check(response):
-                return response.json()['results']
-            else:
-                return False
-        except requests.exceptions.ConnectionError as e:
-            attempt += 1
-            print(f"ConnectionError on attempt {attempt}: {e}")
-            if attempt == max_retries:
-                print("Max retries reached. Operation failed.")
-                return False
-            wait_time = 2 ** attempt  # Exponential backoff
-            print(f"Retrying in {wait_time} seconds...")
-            time.sleep(wait_time)
+    def commit_list(self, statements, return_graphs=False, max_retries=3):
+        """Commit a list of statements to Neo4j DB via REST API.
+        Prints requests status and warnings if any problems with commit.
+            - statements: list of Cypher statements as strings
+            - return_graphs: optionally specify graphs to be returned in JSON results.
+        Errors prompt warnings, not exceptions, and cause return = False.
+        Returns results list of results or False if any errors are encountered."""
+        
+        cstatements = []
+        if return_graphs:
+            for s in statements:
+                cstatements.append({'statement': s, "resultDataContents": ["row", "graph"]})
+        else:
+            for s in statements:
+                cstatements.append({'statement': s})  # Rows and columns are returned by default.
+        payload = {'statements': cstatements}
+        headers = self.headers
+
+        attempt = 0
+        while attempt < max_retries:
+            try:
+                response = requests.post(
+                    url=self.base_uri + self.commit,
+                    auth=(self.usr, self.pwd),
+                    data=json.dumps(payload),
+                    headers=headers
+                )
+                if self.rest_return_check(response):
+                    return response.json()['results']
+                else:
+                    return False
+            except requests.exceptions.ConnectionError as e:
+                attempt += 1
+                print(f"ConnectionError on attempt {attempt}: {e}")
+                if attempt == max_retries:
+                    print("Max retries reached. Operation failed.")
+                    return False
+                wait_time = 2 ** attempt  # Exponential backoff
+                print(f"Retrying in {wait_time} seconds...")
+                time.sleep(wait_time)
 
     def commit_list_in_chunks(self, statements, verbose=False, chunk_length=1000):
         """Commit a list of statements to neo4J DB via REST API, split into chunks.