entry:NXentry
    @NX_class = "NXentry"
    instrument:NXinstrument
      @NX_class = "NXinstrument"
      detector:NXdetector
        @NX_class = "NXdetector"
        counts:NX_INT32[31] = [1037, 1318, 1704, '...', 1321]
          @units = "counts"
        two_theta:NX_FLOAT64[31] = [17.92608, 17.92591, 17.92575, '...', 17.92108]
          @units = "degrees"
          @file = "external_angles.hdf5"
          @path = "/angles"