# Module CamomileLibrary.Type.XString.Buf

    module Buf: sig .. end

    type buf

    val create : int -> buf

    val contents : buf -> CamomileLibrary.Type.XString.t

    val length : buf -> int

    val clear : buf -> unit

    val reset : buf -> unit

    val add_char : buf -> CamomileLibrary.Type.UChar.t -> unit

    val add_string : buf ->
           CamomileLibrary.Type.XString.t -> unit

    val add_buffer : buf ->
           buf -> unit