docs: public static Map<String, MethodNode> getDeclaredMethodsFromInterfaces(ClassNode cNode) {
          Map<String, MethodNode> result = new HashMap<String, MethodNode>();
          ClassNode[] interfaces = cNode.getInterfaces();
          for (ClassNode iface : interfaces) {
              result.putAll(iface.getDeclaredMethodsMap());
          }
          return result;
      }