hb_ot_layout_feature_get_lookups

function hb_ot_layout_feature_get_lookups(

  face: Phb_face_t;

  table_tag: Thb_tag_t;

  feature_index: guint;

  start_offset: guint;

  lookup_count: Pguint;

  lookup_indexes: Pguint

):guint;