Since 1.4.2Optionalproperties: Partial<{ tag: tag_t; value: number }>Converts an HarfBuzz.variation_t into a NULL-terminated string in the format
understood by hb_variation_from_string(). The client in responsible for
allocating big enough size for buf, 128 bytes is more than enough.
Note that the string won't include any whitespace.
Data type for holding variation data. Registered OpenType variation-axis tags are listed in OpenType Axis Tag Registry.
Since
1.4.2