original_string: public function getExtensions(ExtensionLevel $level)
      {
          if (!isset($this->extensions[(string) $level])) {
              return null;
          }
  
          return $this->extensions[(string) $level];
      }
code: public function getExtensions(ExtensionLevel $level)
      {
          if (!isset($this->extensions[(string) $level])) {
              return null;
          }
  
          return $this->extensions[(string) $level];
      }
code_tokens: public function getExtensions ( ExtensionLevel $ level ) { if ( ! isset ( $ this -> extensions [ ( string ) $ level ] ) ) { return null ; } return $ this -> extensions [ ( string ) $ level ] ; }
docstring: Returns the extensions for the given level.
  
  @param ExtensionLevel $level the level
  @return array[]|null A list of <code>CmisExtensionElementInterface</code> at the requested level or
  <code>null</code> if there are no extensions for the requested level
  @see CmisExtensionElementInterface
docstring_tokens: Returns the extensions for the given level .