public void Create(B2Body body, B2Transform xf, B2FixtureDef def)
{
}
/// <summary>
/// Destroy a rigid body given a definition. No reference to the definition
/// is retained. This function is locked during callbacks.
/// @warning This automatically deletes all associated shapes and joints.
/// @warning This function is locked during callbacks.
/// </summary>
/// <param name="b"></param>
public void DestroyBody(B2Body b)
{
}