Method Cairo.Surface()->get_mime_data()
- Method
get_mime_data
 string(8bit)|zeroget_mime_data(string(7bit)mime_type)- Description
 Return mime data previously attached to surface using the specified mime type. If no data has been attached with the given mime type,
UNDEFINEDis returned.- Parameter 
mime_type the mime type of the image data
- Returns
 the image data attached to the surface