in dataenum-processor/src/main/java/com/spotify/dataenum/processor/generator/method/MethodMethods.java [80:89]
public static MethodTree lookupTree(ExecutableElement methodElement, Trees trees) {
assert methodElement.getKind() == ElementKind.METHOD;
AtomicReference<MethodTree> methodRef = new AtomicReference<>();
new MethodLookup(methodRef::set).scan(trees.getPath(methodElement), null);
MethodTree method = methodRef.get();
assert method != null;
return method;
}