docs: @Deprecated
      public static @CheckForNull
      JavaClassAndMethod findConcreteMethod(JavaClass javaClass, String methodName, String methodSig) {
  
          if (DEBUG_METHOD_LOOKUP) {
              System.out.println("Check " + javaClass.getClassName());
          }
          Method[] methodList = javaClass.getMethods();
          for (Method method : methodList) {
              if (method.getName().equals(methodName) && method.getSignature().equals(methodSig)
                      && accessFlagsAreConcrete(method.getAccessFlags())) {
                  JavaClassAndMethod m = new JavaClassAndMethod(javaClass, method);
  
                  return m;
  
              }
          }
          if (DEBUG_METHOD_LOOKUP) {
              System.out.println("\t==> NOT FOUND");
          }
          return null;
      }