https://hbase.apache.org/2.3/testdevapidocs/org/apache/hadoop/hbase/io/hfile/bucket/TestByteBufferIOEngine.html
TestByteBufferIOEngine (Apache HBase 2.3.0 Test API)
apache hbasetestapi
https://hbase.apache.org/2.3/testdevapidocs/org/apache/hadoop/hbase/io/hfile/bucket/TestByteBufferIOEngine.MockBucketEntry.html
TestByteBufferIOEngine.MockBucketEntry (Apache HBase 2.3.0 Test API)
apache hbasetestapi