[Trigger] Check if unit has ability?

[I)eath2u4me]

I've looked but found nothing. Anyway, how do you make a trigger to check if a unit has an ability?

• Player Has Chosen Turtle
  • Events
    • Player - Player 1 (Red) types a chat message containing -turtle as An exact match
    • Player - Player 2 (Blue) types a chat message containing -turtle as An exact match
    • Player - Player 3 (Teal) types a chat message containing -turtle as An exact match
    • Player - Player 4 (Purple) types a chat message containing -turtle as An exact match
    • Player - Player 5 (Yellow) types a chat message containing -turtle as An exact match
    • Player - Player 7 (Green) types a chat message containing -turtle as An exact match
    • Player - Player 8 (Pink) types a chat message containing -turtle as An exact match
    • Player - Player 9 (Gray) types a chat message containing -turtle as An exact match
    • Player - Player 10 (Light Blue) types a chat message containing -turtle as An exact match
    • Player - Player 11 (Dark Green) types a chat message containing -turtle as An exact match
  • Conditions
  • Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • ((Triggering player) is an ally of Player 6 (Orange)) Equal to True
      • Then - Actions
        • Unit Group - Pick every unit in (Units owned by (Triggering player) of type Support Powers 1 (usa)) and do (Unit - Add |cFFC04000Support Power|r Structual Defense (Neutral Hostile) to (Picked unit))
        • Unit Group - Pick every unit in (Units owned by (Triggering player) of type Support Powers 2 (usa)) and do (Unit - Add |cFFC04000Support Power|r Raise De|cFFFFFF00f|renses to (Picked unit))
        • Unit - Create 1 Turtle Class for (Triggering player) at (Center of Tur Class <gen>) facing Default building facing degrees
      • Else - Actions
        • Unit Group - Pick every unit in (Units owned by (Triggering player) of type Support Powers 1 (china)\) and do (Unit - Add |cFFC04000Support Power|r Structual Defense (Neutral Hostile) to (Picked unit))
        • Unit Group - Pick every unit in (Units owned by (Triggering player) of type Support Powers 2 (china)\) and do (Unit - Add |cFFC04000Support Power|r Raise De|cFFFFFF00f|renses to (Picked unit))
        • Unit - Create 1 Turtle Class for (Triggering player) at (Center of Tur Class <gen>) facing Default building facing degrees

In that trigger, I want it to check if a player has a unit with a certain ability.