duration property
      
      num
      get
      duration
      
    
    
Gets or sets the duration for animations, in milliseconds.
The default value is NaN, which means it inherits the default value from the AnimationManager#duration,
which defaults to 600 milliseconds.
The value must be a number greater than or equal to 1, or NaN.
Setting this property does not raise any events.
Implementation
_i2.num get duration => _i4.getProperty(
      this,
      'duration',
    );
      
      set
      duration
      (num value) 
      
    
    
    
Implementation
set duration(_i2.num value) {
  _i4.setProperty(
    this,
    'duration',
    value,
  );
}