I am using D8 and creating revision for a node with the following code.
$nid = "my_node_id";
$node = \Drupal\node\Entity\Node::load($nid);
// Make this change a new revision
$node->setNewRevision(TRUE);
$node->revision_log = 'Created revision for node' . $nid;
$node->setRevisionCreationTime(REQUEST_TIME);
$node->setRevisionUserId($user_id);
$node->save();
When I create a revision, it is set as the main revision, instead of one of the revisions. Is it taking the revision timestamp when creating, and pushing latest to the top? Is there a function that tells me I am using the latest revision?