https://lucene.apache.org/lucene-parent/lucene-core: Apache Lucene Java Core (The Apache Software Foundation) 
public interface org.apache.lucene.search.BoostAttribute extends org.apache.lucene.util.Attribute
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.apache.lucene.search.BoostAttribute
  super_class: java.lang.Object
{
  public static final float DEFAULT_BOOST;
    descriptor: F
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 1.0

  public abstract void setBoost(float);
    descriptor: (F)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
       Name  Flags
      boost  

  public abstract float getBoost();
    descriptor: ()F
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "BoostAttribute.java"