build/web/c0.js
function() {
    CallbackQueue.release(this.reactMountReady);
    this.reactMountReady = null;

    ReactPutListenerQueue.release(this.putListenerQueue);
    this.putListenerQueue = null;
  }
function() {
    CallbackQueue.release(this.reactMountReady);
    this.reactMountReady = null;

    ReactPutListenerQueue.release(this.putListenerQueue);
    this.putListenerQueue = null;
  }
function ( ) { CallbackQueue . release ( this . reactMountReady ) ; this . reactMountReady = null ; ReactPutListenerQueue . release ( this . putListenerQueue ) ; this . putListenerQueue = null ; }
`PooledClass` looks for this, and will invoke this before allowing this
instance to be resused.
PooledClass looks for this and will invoke this before allowing this instance to be resused .