(
 (heading (_) @name)
 .
 (content) @symbol
 (#set! "kind" "Interface")
 )

; (heading
;   "=="
;   (text) @name
;   (#set! "kind" "Interface")
;   (#set! "level" 2)
;   ) @start
;
; (heading
;   "==="
;   (text) @name
;   (#set! "kind" "Interface")
;   (#set! "level" 3)
;   ) @start