https://lucene.apache.org/lucene-parent/lucene-spatial3d: Lucene Spatial shapes implemented using 3D planar geometry (The Apache Software Foundation) 
class org.apache.lucene.spatial3d.geom.GeoStandardPath$DegenerateSegmentEndpoint extends org.apache.lucene.spatial3d.geom.GeoStandardPath$BaseSegmentEndpoint
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.apache.lucene.spatial3d.geom.GeoStandardPath$DegenerateSegmentEndpoint
  super_class: org.apache.lucene.spatial3d.geom.GeoStandardPath$BaseSegmentEndpoint
{
  public void <init>(org.apache.lucene.spatial3d.geom.GeoPoint);
    descriptor: (Lorg/apache/lucene/spatial3d/geom/GeoPoint;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.lucene.spatial3d.geom.GeoStandardPath$DegenerateSegmentEndpoint this
        start local 1 // org.apache.lucene.spatial3d.geom.GeoPoint point
         0: .line 644
            aload 0 /* this */
            aload 1 /* point */
            invokespecial org.apache.lucene.spatial3d.geom.GeoStandardPath$BaseSegmentEndpoint.<init>:(Lorg/apache/lucene/spatial3d/geom/GeoPoint;)V
         1: .line 645
            return
        end local 1 // org.apache.lucene.spatial3d.geom.GeoPoint point
        end local 0 // org.apache.lucene.spatial3d.geom.GeoStandardPath$DegenerateSegmentEndpoint this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lorg/apache/lucene/spatial3d/geom/GeoStandardPath$DegenerateSegmentEndpoint;
            0    2     1  point  Lorg/apache/lucene/spatial3d/geom/GeoPoint;
    MethodParameters:
       Name  Flags
      point  final
}
SourceFile: "GeoStandardPath.java"
NestHost: org.apache.lucene.spatial3d.geom.GeoStandardPath
InnerClasses:
  private BaseSegmentEndpoint = org.apache.lucene.spatial3d.geom.GeoStandardPath$BaseSegmentEndpoint of org.apache.lucene.spatial3d.geom.GeoStandardPath
  private DegenerateSegmentEndpoint = org.apache.lucene.spatial3d.geom.GeoStandardPath$DegenerateSegmentEndpoint of org.apache.lucene.spatial3d.geom.GeoStandardPath