diff --git a/python/ql/test/experimental/library-tests/CallGraph/CallGraphTest.qll b/python/ql/test/experimental/library-tests/CallGraph/CallGraphTest.qll
index 595a297d2e7..268acca608a 100644
--- a/python/ql/test/experimental/library-tests/CallGraph/CallGraphTest.qll
+++ b/python/ql/test/experimental/library-tests/CallGraph/CallGraphTest.qll
@@ -2,22 +2,22 @@ import python
 
 /** Gets the comment on the line above `ast` */
 Comment commentFor(AstNode ast) {
-    exists(int line | line = ast.getLocation().getStartLine() - 1 |
-        result
-                .getLocation()
-                .hasLocationInfo(ast.getLocation().getFile().getAbsolutePath(), line, _, line, _)
-    )
+  exists(int line | line = ast.getLocation().getStartLine() - 1 |
+    result
+        .getLocation()
+        .hasLocationInfo(ast.getLocation().getFile().getAbsolutePath(), line, _, line, _)
+  )
 }
 
 /** Gets the value from `tag:value` in the comment for `ast` */
 string getAnnotation(AstNode ast, string tag) {
-    exists(Comment comment, string match, string theRegex |
-        theRegex = "([\\w]+):([\\w.]+)" and
-        comment = commentFor(ast) and
-        match = comment.getText().regexpFind(theRegex, _, _) and
-        tag = match.regexpCapture(theRegex, 1) and
-        result = match.regexpCapture(theRegex, 2)
-    )
+  exists(Comment comment, string match, string theRegex |
+    theRegex = "([\\w]+):([\\w.]+)" and
+    comment = commentFor(ast) and
+    match = comment.getText().regexpFind(theRegex, _, _) and
+    tag = match.regexpCapture(theRegex, 1) and
+    result = match.regexpCapture(theRegex, 2)
+  )
 }
 
 /** Gets a callable annotated with `name:name` */
@@ -27,121 +27,121 @@ Function annotatedCallable(string name) { name = getAnnotation(result, "name") }
 Call annotatedCall(string name) { name = getAnnotation(result, "calls") }
 
 predicate missingAnnotationForCallable(string name, Call call) {
-    call = annotatedCall(name) and
-    not exists(annotatedCallable(name))
+  call = annotatedCall(name) and
+  not exists(annotatedCallable(name))
 }
 
 predicate nonUniqueAnnotationForCallable(string name, Function callable) {
-    strictcount(annotatedCallable(name)) > 1 and
-    callable = annotatedCallable(name)
+  strictcount(annotatedCallable(name)) > 1 and
+  callable = annotatedCallable(name)
 }
 
 predicate missingAnnotationForCall(string name, Function callable) {
-    not exists(annotatedCall(name)) and
-    callable = annotatedCallable(name)
+  not exists(annotatedCall(name)) and
+  callable = annotatedCallable(name)
 }
 
 /** There is an obvious problem with the annotation `name` */
 predicate nameInErrorState(string name) {
-    missingAnnotationForCallable(name, _)
-    or
-    nonUniqueAnnotationForCallable(name, _)
-    or
-    missingAnnotationForCall(name, _)
+  missingAnnotationForCallable(name, _)
+  or
+  nonUniqueAnnotationForCallable(name, _)
+  or
+  missingAnnotationForCall(name, _)
 }
 
 /** Source code has annotation with `name` showing that `call` will call `callable` */
 predicate annotatedCallEdge(string name, Call call, Function callable) {
-    not nameInErrorState(name) and
-    call = annotatedCall(name) and
-    callable = annotatedCallable(name)
+  not nameInErrorState(name) and
+  call = annotatedCall(name) and
+  callable = annotatedCallable(name)
 }
 
 // ------------------------- Annotation debug query predicates -------------------------
 query predicate debug_missingAnnotationForCallable(Call call, string message) {
-    exists(string name |
-        message =
-            "This call is annotated with '" + name +
-                "', but no callable with that annotation was extracted. Please fix." and
-        missingAnnotationForCallable(name, call)
-    )
+  exists(string name |
+    message =
+      "This call is annotated with '" + name +
+        "', but no callable with that annotation was extracted. Please fix." and
+    missingAnnotationForCallable(name, call)
+  )
 }
 
 query predicate debug_nonUniqueAnnotationForCallable(Function callable, string message) {
-    exists(string name |
-        message = "Multiple callables are annotated with '" + name + "'. Please fix." and
-        nonUniqueAnnotationForCallable(name, callable)
-    )
+  exists(string name |
+    message = "Multiple callables are annotated with '" + name + "'. Please fix." and
+    nonUniqueAnnotationForCallable(name, callable)
+  )
 }
 
 query predicate debug_missingAnnotationForCall(Function callable, string message) {
-    exists(string name |
-        message =
-            "This callable is annotated with '" + name +
-                "', but no call with that annotation was extracted. Please fix." and
-        missingAnnotationForCall(name, callable)
-    )
+  exists(string name |
+    message =
+      "This callable is annotated with '" + name +
+        "', but no call with that annotation was extracted. Please fix." and
+    missingAnnotationForCall(name, callable)
+  )
 }
 
 // ------------------------- Call Graph resolution -------------------------
 private newtype TCallGraphResolver =
-    TPointsToResolver() or
-    TTypeTrackerResolver()
+  TPointsToResolver() or
+  TTypeTrackerResolver()
 
 /** Describes a method of call graph resolution */
 abstract class CallGraphResolver extends TCallGraphResolver {
-    abstract predicate callEdge(Call call, Function callable);
+  abstract predicate callEdge(Call call, Function callable);
 
-    /**
-     * Holds if annotations show that `call` will call `callable`,
-     * but our call graph resolver was not able to figure that out
-     */
-    predicate expectedCallEdgeNotFound(Call call, Function callable) {
-        annotatedCallEdge(_, call, callable) and
-        not this.callEdge(call, callable)
-    }
+  /**
+   * Holds if annotations show that `call` will call `callable`,
+   * but our call graph resolver was not able to figure that out
+   */
+  predicate expectedCallEdgeNotFound(Call call, Function callable) {
+    annotatedCallEdge(_, call, callable) and
+    not this.callEdge(call, callable)
+  }
 
-    /**
-     * Holds if there are no annotations that show that `call` will call `callable` (where at least one of these are annotated),
-     * but the call graph resolver claims that `call` will call `callable`
-     */
-    predicate unexpectedCallEdgeFound(Call call, Function callable, string message) {
-        this.callEdge(call, callable) and
-        not annotatedCallEdge(_, call, callable) and
-        (
-            exists(string name |
-                message = "Call resolved to the callable named '" + name + "' but was not annotated as such" and
-                callable = annotatedCallable(name) and
-                not nameInErrorState(name)
-            )
-            or
-            exists(string name |
-                message = "Annotated call resolved to unannotated callable" and
-                call = annotatedCall(name) and
-                not nameInErrorState(name) and
-                not exists( | callable = annotatedCallable(_))
-            )
-        )
-    }
+  /**
+   * Holds if there are no annotations that show that `call` will call `callable` (where at least one of these are annotated),
+   * but the call graph resolver claims that `call` will call `callable`
+   */
+  predicate unexpectedCallEdgeFound(Call call, Function callable, string message) {
+    this.callEdge(call, callable) and
+    not annotatedCallEdge(_, call, callable) and
+    (
+      exists(string name |
+        message = "Call resolved to the callable named '" + name + "' but was not annotated as such" and
+        callable = annotatedCallable(name) and
+        not nameInErrorState(name)
+      )
+      or
+      exists(string name |
+        message = "Annotated call resolved to unannotated callable" and
+        call = annotatedCall(name) and
+        not nameInErrorState(name) and
+        not exists( | callable = annotatedCallable(_))
+      )
+    )
+  }
 
-    string toString() { result = "CallGraphResolver" }
+  string toString() { result = "CallGraphResolver" }
 }
 
 /** A call graph resolver based on the existing points-to analysis */
 class PointsToResolver extends CallGraphResolver, TPointsToResolver {
-    override predicate callEdge(Call call, Function callable) {
-        exists(PythonFunctionValue funcValue |
-            funcValue.getScope() = callable and
-            call = funcValue.getACall().getNode()
-        )
-    }
+  override predicate callEdge(Call call, Function callable) {
+    exists(PythonFunctionValue funcValue |
+      funcValue.getScope() = callable and
+      call = funcValue.getACall().getNode()
+    )
+  }
 
-    override string toString() { result = "PointsToResolver" }
+  override string toString() { result = "PointsToResolver" }
 }
 
 /** A call graph resolved based on Type Trackers */
 class TypeTrackerResolver extends CallGraphResolver, TTypeTrackerResolver {
-    override predicate callEdge(Call call, Function callable) { none() }
+  override predicate callEdge(Call call, Function callable) { none() }
 
-    override string toString() { result = "TypeTrackerResolver" }
+  override string toString() { result = "TypeTrackerResolver" }
 }
diff --git a/python/ql/test/experimental/library-tests/CallGraph/PointsTo.ql b/python/ql/test/experimental/library-tests/CallGraph/PointsTo.ql
index 180135385c1..f86842f2fe4 100644
--- a/python/ql/test/experimental/library-tests/CallGraph/PointsTo.ql
+++ b/python/ql/test/experimental/library-tests/CallGraph/PointsTo.ql
@@ -2,9 +2,9 @@ import python
 import CallGraphTest
 
 query predicate expectedCallEdgeNotFound(Call call, Function callable) {
-    any(PointsToResolver r).expectedCallEdgeNotFound(call, callable)
+  any(PointsToResolver r).expectedCallEdgeNotFound(call, callable)
 }
 
 query predicate unexpectedCallEdgeFound(Call call, Function callable, string message) {
-    any(PointsToResolver r).unexpectedCallEdgeFound(call, callable, message)
+  any(PointsToResolver r).unexpectedCallEdgeFound(call, callable, message)
 }
diff --git a/python/ql/test/experimental/library-tests/CallGraph/Relative.ql b/python/ql/test/experimental/library-tests/CallGraph/Relative.ql
index ba1b17e7d24..f62e4d21cbd 100644
--- a/python/ql/test/experimental/library-tests/CallGraph/Relative.ql
+++ b/python/ql/test/experimental/library-tests/CallGraph/Relative.ql
@@ -1,15 +1,14 @@
 import python
-
 import CallGraphTest
 
 query predicate pointsTo_found_typeTracker_notFound(Call call, Function callable) {
-    annotatedCallEdge(_, call, callable) and
-    any(PointsToResolver r).callEdge(call, callable) and
-    not any(TypeTrackerResolver r).callEdge(call, callable)
+  annotatedCallEdge(_, call, callable) and
+  any(PointsToResolver r).callEdge(call, callable) and
+  not any(TypeTrackerResolver r).callEdge(call, callable)
 }
 
 query predicate pointsTo_notFound_typeTracker_found(Call call, Function callable) {
-    annotatedCallEdge(_, call, callable) and
-    not any(PointsToResolver r).callEdge(call, callable) and
-    any(TypeTrackerResolver r).callEdge(call, callable)
+  annotatedCallEdge(_, call, callable) and
+  not any(PointsToResolver r).callEdge(call, callable) and
+  any(TypeTrackerResolver r).callEdge(call, callable)
 }
diff --git a/python/ql/test/experimental/library-tests/CallGraph/TypeTracker.ql b/python/ql/test/experimental/library-tests/CallGraph/TypeTracker.ql
index f1fe0398a7e..a62332e3839 100644
--- a/python/ql/test/experimental/library-tests/CallGraph/TypeTracker.ql
+++ b/python/ql/test/experimental/library-tests/CallGraph/TypeTracker.ql
@@ -2,9 +2,9 @@ import python
 import CallGraphTest
 
 query predicate expectedCallEdgeNotFound(Call call, Function callable) {
-    any(TypeTrackerResolver r).expectedCallEdgeNotFound(call, callable)
+  any(TypeTrackerResolver r).expectedCallEdgeNotFound(call, callable)
 }
 
 query predicate unexpectedCallEdgeFound(Call call, Function callable, string message) {
-    any(TypeTrackerResolver r).unexpectedCallEdgeFound(call, callable, message)
+  any(TypeTrackerResolver r).unexpectedCallEdgeFound(call, callable, message)
 }
diff --git a/python/ql/test/experimental/library-tests/CallGraph/code/__init__.py b/python/ql/test/experimental/library-tests/CallGraph/code/__init__.py
new file mode 100644
index 00000000000..e69de29bb2d