IVE: An interface of kind Sporadic shall have at most ONE IN parameter and ZERO OUT parameters
An interface of kind Sporadic shall have at most ONE IN parameter and ZERO OUT parameters implying that:
- the + button shall be disabled after a parameter has been added (and re-enabled if the parameter is deleted)
- If a Protected or Unprotected interface with multiple parameters is changed to Sporadic, an error shall be raised
- the direction combo allowing to change from IN to OUT shall be disabled if interface is Sporadic
- If a Protected or Unprotected interface with an OUT parameter is changed to Sporadic, an error shall be raised