Doubt about parsing the string of "null"

[Alanscut]

Hi Andres @aalmiray, in the latest verion 3.0.0, in function JSONObject.element(key, value), if the input value is a valid JSON formatted string, it will still output a string instead of converting it to JSONObject/JSONArray. But if the string is "null", it will be transformed to a JSONNull, which I think it maybe unreasonable, so I fix it to output the string "null".

public void test_object_element_null_string() {
    JSONObject object = new JSONObject();
    object.element("key1", "{}");
    object.element("key2", "[]");
    object.element("key3", "null");
    Assertions.assertTrue(object.get("key1") instanceof String);
    Assertions.assertTrue(object.get("key2") instanceof String);
    Assertions.assertTrue(object.get("key3") instanceof JSONNull);
    System.out.println(object);

    // {"key1":"{}","key2":"[]","key":null}
    "{}" JSONObject format --> string
    "[]" JSONArray format --> string
    "null" JSONNull formt --> JSONNull
}

However, in function JSONArray.element(), if the string is a valid JSON formatted string, it will be transformed to a JSONArray/JSONObject/JSONNull.

/**
 * Append a String value. This increases the array's length by one.<br>
 * The string may be a valid JSON formatted string, in tha case, it will be
 * transformed to a JSONArray, JSONObject or JSONNull.
 *
 * @param value A String value.
 *
 * @return this.
 */
public JSONArray element(String value) {
    return element(value, new JsonConfig());
}

It is because of this way of handling the input string in JSONArray that we can never get an JSONArray like this: ["null", "string"]...

public void test_array_element_null_string() {
    JSONArray array = new JSONArray();
    array.element("\"null\"");
    array.element("null");
    System.out.println(array);

    // ["\"null\"",null]
}

I wonder why the function of element() in JSONArray and JSONObject handle the input value in diffrent way?