* @self: the tracer instance
* @ts: the current timestamp
* @object: the object being unreffed
* @self: the tracer instance
* @ts: the current timestamp
* @object: the object being unreffed
* @self: the tracer instance
* @ts: the current timestamp
* @object: the object being reffed
* @self: the tracer instance
* @ts: the current timestamp
* @object: the object being reffed
* @self: the tracer instance
* @ts: the current timestamp
* @object: the mini object being unreffed
* @self: the tracer instance
* @ts: the current timestamp
* @object: the mini object being unreffed
* @self: the tracer instance
* @ts: the current timestamp
* @object: the mini object being reffed
* @self: the tracer instance
* @ts: the current timestamp
* @object: the mini object being reffed