Based on #81 the guideline

G-7240: Avoid using an IN OUT parameter as IN or OUT only.

was removed and the following to guidelines were created:

• G-7160: Always explicitly state parameter mode.
• G-7170: Avoid using an IN OUT parameter as IN or OUT only.

G-7240 was based on G-68. The validator was implemented in the sense of G-7160 only. I therefore map the v2 based implementation (68) to the new v4 G-7160. It would be good to change the appendix accordingly.

As discussed in #81 it will be a challenge to implement a check for G-7170, because there is no reliable way to identify the necessary mode. Hence, it is not planned to implement G-7170 as check.