Static FILE_ATTRIBUTE_THUMBNAIL_IS_VALID 

pub static FILE_ATTRIBUTE_THUMBNAIL_IS_VALID: &GStr

A key in the “thumbnail” namespace for checking whether the thumbnail is outdated.

This attribute is true if the thumbnail is up-to-date with the file it represents, and false if the file has been modified since the thumbnail was generated.

If FILE_ATTRIBUTE_THUMBNAILING_FAILED is true and this attribute is false, it indicates that thumbnailing may be attempted again and may succeed.

Corresponding #GFileAttributeType is FileAttributeType::Boolean.