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Expected output for 'h5dump --filedriver=family tfamily%05d.h5'
#############################
HDF5 "tfamily%05d.h5" {
GROUP "/" {
   DATASET "dset1" {
      DATATYPE  H5T_STD_I32BE  
      DATASPACE  SIMPLE { ( 10, 15 ) / ( 10, 15 ) } 
      DATA {
         0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
         2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
         3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
         4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
         5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
         6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
         7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
         8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22,
         9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23
      } 
   } 
} 
}