https://lucene.apache.org/lucene-parent/lucene-core: Apache Lucene Java Core (The Apache Software Foundation) 
public interface org.apache.lucene.search.Collector
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.apache.lucene.search.Collector
  super_class: java.lang.Object
{
  public abstract org.apache.lucene.search.LeafCollector getLeafCollector(org.apache.lucene.index.LeafReaderContext);
    descriptor: (Lorg/apache/lucene/index/LeafReaderContext;)Lorg/apache/lucene/search/LeafCollector;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.io.IOException
    MethodParameters:
         Name  Flags
      context  

  public abstract org.apache.lucene.search.ScoreMode scoreMode();
    descriptor: ()Lorg/apache/lucene/search/ScoreMode;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "Collector.java"