constructor(cond, trueExpr, falseExpr) {
    super();
    this.cond = cond;
    this.trueExpr = trueExpr;
    this.falseExpr = falseExpr;
  }
Initialize a new `Ternary` with `cond`, `trueExpr` and `falseExpr`.

@param {Expression} cond
@param {Expression} trueExpr
@param {Expression} falseExpr
@api public