original_string: public function getCoreErrorHandler()
      {
          return function($type, $message, $file, $line) {
              return $this->handleCoreError($type, $message, $file, $line);
          };
      }
code: public function getCoreErrorHandler()
      {
          return function($type, $message, $file, $line) {
              return $this->handleCoreError($type, $message, $file, $line);
          };
      }
code_tokens: public function getCoreErrorHandler ( ) { return function ( $ type , $ message , $ file , $ line ) { return $ this -> handleCoreError ( $ type , $ message , $ file , $ line ) ; } ; }
docstring: Returns the callback being used to handle core errors
  
  This method is primarily used internally when setting up error callbacks, but
  is left public for testing purposes. It essentially returns a reference to
  the ::handleCoreError() method.
  
  The returned closure has the following signature:
  ```php
  function(int $type, string $message, string $file, int $line) {}
  ```
  
  @return Closure
docstring_tokens: Returns the callback being used to handle core errors