otLayoutScriptGetLanguageTags

uint otLayoutScriptGetLanguageTags(harfbuzz.face.Face face,  harfbuzz.types.Tag tableTag,  uint  scriptIndex,  uint  startOffset,  ref  harfbuzz.types.Tag[]  languageTags)

Fetches a list of language tags in the given face's GSUB or GPOS table, underneath the specified script index. The list returned will begin at the offset provided.

Parameters

`face`	#hb_face_t to work upon
`tableTag`	#HB_OT_TAG_GSUB or #HB_OT_TAG_GPOS
`scriptIndex`	The index of the requested script tag
`startOffset`	offset of the first language tag to retrieve
`languageTags`	Array of language tags found in the table

Returns

Total number of language tags.