Information returned by a collision in 2D physics.
| collider | The incoming Collider2D involved in the collision. | 
| contacts | The specific points of contact with the incoming Collider2D. | 
| enabled | Whether the collision was disabled or not. | 
| gameObject | The incoming GameObject involved in the collision. | 
| relativeVelocity | The relative linear velocity of the two colliding objects (Read Only). | 
| rigidbody | The incoming Rigidbody2D involved in the collision. | 
| transform | The Transform of the incoming object involved in the collision. |