setAlpha(min, max, rate, ease,

ignoreChildInput : boolean If ignoreChildInput is false it will allow this objects children

rotation : number The angle of rotation of the group container, in radians. This will adjust the group container itself

minRotation : number The minimum possible angular velocity of a particle. Source

frequency : number How often a particle is emitted in ms (if emitter is started with Explode === false).

next() → {any} Advances the group cursor to the next (higher) object in the group. If the

countLiving() → {integer} Get the number of living children in this group. Returns

autoScale : boolean When a new Particle is emitted this controls if it will automatically scale in size. Use Emitter.setScale to

physicsSortDirection : integer If this Group contains Arcade Physics Sprites you can set a custom sort direction via this property

setSize(width, height) → {