ROS1 ROS2 porting help ?

edit

i have a std::queue defined like this

std::queue<sensor_msgs::PointCloud2ConstPtr> pointCloudBuf;

I wanted to understand how to define this in ROS2 , i tried the following but

std::queue<sensor_msgs::msg::PointCloud2::ConstPtr> pointCloudBuf;

When trying to push to the queue

void velodyneHandler(const sensor_msgs::msg::PointCloud2::SharedPtr laserCloudMsg)
{
    mutex_lock.lock();
    pointCloudBuf.push(*laserCloudMsg);
    mutex_lock.unlock();

}

i am getting the following error

no matching function for call to ‘std::queue<std::shared_ptr<const sensor_msgs::msg::PointCloud2_<std::allocator<void> > > >::push(std::__shared_ptr_access<sensor_msgs::msg::PointCloud2_<std::allocator<void> >, __gnu_cxx::_S_atomic, false, false>::element_type&)’
   61 |     pointCloudBuf.push(*laserCloudMsg);
      |     ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~

UPDATE

std::queue<sensor_msgs::msg::PointCloud2::SharedPtr> pointCloudBuf;

This seem to have solved my compilation issues , dont know if it will break something else down the line .

Anyhow , thankyou ROS community !