before method

void before([
  1. AnimationEffect? effects1,
  2. AnimationEffect? effects2,
  3. AnimationEffect? effects3
])

Implementation

void before(
        [AnimationEffect? effects1,
        AnimationEffect? effects2,
        AnimationEffect? effects3]) =>
    js_util.callMethod(this, 'before', [effects1, effects2, effects3]);