public final void writeInt32(int value, String format) {
        if (format == null || jsonb) {
            writeInt32(value);
            return;
        }

        writeString(String.format(format, value));
    }
If ReferenceDetection has been set, returns the path of the current object, otherwise returns null
@since 2.0.51
@return the path of the current object
core/src/main/java/com/alibaba/fastjson2/JSONWriter.java