docs: function findValueInObject(value, object) {
      checkHasType(object, "object", "Non-object value provided as second argument to findValueInObject");
      checkHasValue(object, "Invalid null object provided as second argument to findValueInObject");
  
      for (var key in object) {
          var objValue = object[key];
  
          if (deepEquals(value, objValue)) {
              return key;
          }
      }
  
      return; // explicit return of undefined
  }