Deprecated Code Report [#3079613]

php drupal-check.phar modules/contrib/materialize/
 109/109 [▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100%

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  Line   modules/materialize_helper/src/Commands/MaterializeCommands.php            
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         Class Drush\Commands\DrushCommands not found and could not be autoloaded.  
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  Line   src/Materialize.php                                                                
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  389    Call to deprecated method strtolower() of class Drupal\Component\Utility\Unicode.  
  389    Call to deprecated method strtolower() of class Drupal\Component\Utility\Unicode.  
  420    Call to deprecated function drupal_set_message().                                  
  421    Call to deprecated function drupal_set_message().                                  
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  Line   src/Plugin/Preprocess/MaterializeDropdown.php                                  
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  48     Call to deprecated method strpos() of class Drupal\Component\Utility\Unicode.  
  49     Call to deprecated method strpos() of class Drupal\Component\Utility\Unicode.  
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  Line   src/Plugin/Setting/Schemas.php                     
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  203    Call to deprecated function drupal_set_message().  
  215    Call to deprecated function drupal_set_message().  
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  Line   src/Theme.php                                      
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  649    Call to deprecated function drupal_set_message().  
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  Line   src/Utility/Unicode.php                                                        
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  56     Call to deprecated method substr() of class Drupal\Component\Utility\Unicode.  
  58     Call to deprecated method strpos() of class Drupal\Component\Utility\Unicode.  
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  Line   tmp/ActionsDropbutton.php                                                                                                                              
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         Class Drupal\materialize\Plugin\Process\ActionsDropbutton was not found while trying to analyse it - autoloading is probably not configured properly.  
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  Line   tmp/Prerender/Dropbutton.php                                                                                                                      
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         Class Drupal\materialize\Plugin\Prerender\Dropbutton was not found while trying to analyse it - autoloading is probably not configured properly.  
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  Line   tmp/Prerender/Operations.php                                                                                                                      
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         Class Drupal\materialize\Plugin\Prerender\Operations was not found while trying to analyse it - autoloading is probably not configured properly.  
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 [ERROR] Found 15 errors