if err != nil {
						b.Fatal(err)
					}
					// Save...
					dump, err = xl.AppendTo(dump[:0])
					if err != nil {
						b.Fatal(err)
					}
				}
			})
			b.Run("DeleteVersion", func(b *testing.B) {
				b.SetBytes(int64(size))
				b.ResetTimer()
				b.ReportAllocs()
				for i := 0; i < b.N; i++ {
					// Load...
					xl = xlMetaV2{}
					err := xl.Load(enc)

		return x.versions[i].header.sortsBefore(x.versions[j].header)
	})
}

// DeleteVersion deletes the version specified by version id.
// returns to the caller which dataDir to delete, also
// indicates if this is the last version.
func (x *xlMetaV2) DeleteVersion(fi FileInfo) (string, error) {
	// This is a situation where versionId is explicitly

	count := len(testCases)
	for i := 4; i < len(testCases); i++ {
		tc := testCases[i]
		dataDir, err := xl.DeleteVersion(fileInfos[i])
		failOnErr(count+1, err)
		if dataDir != tc.expectedDataDir {
			t.Fatalf("Expected %s but got %s", tc.expectedDataDir, dataDir)
		}
		count++
	}
}