/// <param name="impulse">The world impulse vector, usually in N-seconds or kg-m/s.</param>
/// <param name="point">The world position of the point of application.</param>
public void ApplyImpulse(B2Vec2 impulse, B2Vec2 point)
{
}
/// <summary>
/// Apply a torque. This affects the angular velocity
/// without affecting the linear velocity of the center of mass.
public void Create(B2Body body, B2Transform xf, B2FixtureDef def)
{
}