xternal=true#numRamDocs()" title="class or interface in org.apache.lucene.index">numRamDocs</a>, <a href="http://lucene.apache.org/core/5_1_0/core/org/apache/lucene/index/IndexWriter.html?is-external=true#prepareCommit()" title="class or interface in org.apache.lucene.index">prepareCommit</a>, <a href="http://lucene.apache.org/core/5_1_0/core/org/apache/lucene/index/IndexWriter.html?is-external=true#ramBytesUsed()" title="class or interface in org.apache.lucene.index">ramBytesUsed</a>, <a href="http://lucen