fix ByteSequenceOutputs dead loop issue
fix asserting method
fix over-commit issue
migrate BTTReader's internal methods
fix seekExact method by avoid uint8 overflow
fix hex represent for BR; remove debug statements
migrate termState() method
migrate nextTerm() method
migrate BTTR.docFreq() method
migrate BTTR.totalTermFreq() method
migrate explanation types
cleanup Scorer interface
convert TopDocsCollector to interface
migrate seekExact from state method
fix null check
DocsEnum as interface; readVIntBlock(); PostingReaderBase.docs();
blockDocsEnum struct; MaxDataSize const; SegmentTermsEnum.docsByFlag();
add error to SeekXXX() method; Scorer as interface
implement TFIDFSimSimilarity.simScorer()
implement SegmentCoreReaders.normValues()
disable listeners
implement Lucene42DocValuesProducer.loadNumeric()