original_string: public function getThumbMime($revision = null)
  	{
  		// Without revision, use current info
  		if (!isset($revision)) {
  			return (isset($this->info['thumbmime']) ? $this->info['thumbmime'] : '');
  		}
  
  		// Obtain the properties of the revision
  		if (($info = $this->getRevision($revision)) === null) {
  			return null;
  		}
  
  		// Check for thumbnail MIME type
  		return (isset($info['thumbmime']) ? $info['thumbmime'] : '');
  	}
code: public function getThumbMime($revision = null)
  	{
  		// Without revision, use current info
  		if (!isset($revision)) {
  			return (isset($this->info['thumbmime']) ? $this->info['thumbmime'] : '');
  		}
  
  		// Obtain the properties of the revision
  		if (($info = $this->getRevision($revision)) === null) {
  			return null;
  		}
  
  		// Check for thumbnail MIME type
  		return (isset($info['thumbmime']) ? $info['thumbmime'] : '');
  	}
code_tokens: public function getThumbMime ( $ revision = null ) { // Without revision, use current info if ( ! isset ( $ revision ) ) { return ( isset ( $ this -> info [ 'thumbmime' ] ) ? $ this -> info [ 'thumbmime' ] : '' ) ; } // Obtain the properties of the revision if ( ( $ info = $ this -> getRevision ( $ revision ) ) === null ) { return null ; } // Check for thumbnail MIME type return ( isset ( $ info [ 'thumbmime' ] ) ? $ info [ 'thumbmime' ] : '' ) ; }
docstring: Returns the MIME type of this file's thumbnail,
  or of its specified revision.
  Returns empty string if property not available for this file type.
  
  @param   mixed  $revision  The index or timestamp of the revision (optional)
  @return  mixed             The MIME type of this file's thumbnail (string),
  or '' if unavailable, or null if revision not found
docstring_tokens: Returns the MIME type of this file s thumbnail or of its specified revision . Returns empty string if property not available for this file type .