Make changes to page with preprocess page in module

This is how you can make changes to a page view with preprocess page hook from your module

<?php
function support_bulk_preprocess_page(&$variables) {

//Print out to see all variables
 
?>

  <pre>
  <?php
      print_r
($variables);
 
?>

  </pre>
  <?php
 
exit;

  if (
$variables['node'] && arg(2) != 'edit') {
    
$variables['template_files'][] = 'page-'. $variables['node']->type;
  }


  if (
$variables['node']) {
    
$variables['body_classes'][] = 'page-'. $variables['node']->type;
  }

}
?>
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