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.GeoComplexPolygon$YTree extends org.apache.lucene.spatial3d.geom.GeoComplexPolygon$Tree
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.apache.lucene.spatial3d.geom.GeoComplexPolygon$YTree
  super_class: org.apache.lucene.spatial3d.geom.GeoComplexPolygon$Tree
{
  public void <init>(java.util.List<org.apache.lucene.spatial3d.geom.GeoComplexPolygon$Edge>);
    descriptor: (Ljava/util/List;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.lucene.spatial3d.geom.GeoComplexPolygon$YTree this
        start local 1 // java.util.List allEdges
         0: .line 935
            aload 0 /* this */
            aload 1 /* allEdges */
            invokespecial org.apache.lucene.spatial3d.geom.GeoComplexPolygon$Tree.<init>:(Ljava/util/List;)V
         1: .line 936
            return
        end local 1 // java.util.List allEdges
        end local 0 // org.apache.lucene.spatial3d.geom.GeoComplexPolygon$YTree this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    2     0      this  Lorg/apache/lucene/spatial3d/geom/GeoComplexPolygon$YTree;
            0    2     1  allEdges  Ljava/util/List<Lorg/apache/lucene/spatial3d/geom/GeoComplexPolygon$Edge;>;
    Signature: (Ljava/util/List<Lorg/apache/lucene/spatial3d/geom/GeoComplexPolygon$Edge;>;)V
    MethodParameters:
          Name  Flags
      allEdges  final

  protected double getMinimum(org.apache.lucene.spatial3d.geom.GeoComplexPolygon$Edge);
    descriptor: (Lorg/apache/lucene/spatial3d/geom/GeoComplexPolygon$Edge;)D
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.lucene.spatial3d.geom.GeoComplexPolygon$YTree this
        start local 1 // org.apache.lucene.spatial3d.geom.GeoComplexPolygon$Edge edge
         0: .line 948
            aload 1 /* edge */
            getfield org.apache.lucene.spatial3d.geom.GeoComplexPolygon$Edge.planeBounds:Lorg/apache/lucene/spatial3d/geom/XYZBounds;
            invokevirtual org.apache.lucene.spatial3d.geom.XYZBounds.getMinimumY:()Ljava/lang/Double;
            invokevirtual java.lang.Double.doubleValue:()D
            dreturn
        end local 1 // org.apache.lucene.spatial3d.geom.GeoComplexPolygon$Edge edge
        end local 0 // org.apache.lucene.spatial3d.geom.GeoComplexPolygon$YTree this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/lucene/spatial3d/geom/GeoComplexPolygon$YTree;
            0    1     1  edge  Lorg/apache/lucene/spatial3d/geom/GeoComplexPolygon$Edge;
    MethodParameters:
      Name  Flags
      edge  final

  protected double getMaximum(org.apache.lucene.spatial3d.geom.GeoComplexPolygon$Edge);
    descriptor: (Lorg/apache/lucene/spatial3d/geom/GeoComplexPolygon$Edge;)D
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.lucene.spatial3d.geom.GeoComplexPolygon$YTree this
        start local 1 // org.apache.lucene.spatial3d.geom.GeoComplexPolygon$Edge edge
         0: .line 953
            aload 1 /* edge */
            getfield org.apache.lucene.spatial3d.geom.GeoComplexPolygon$Edge.planeBounds:Lorg/apache/lucene/spatial3d/geom/XYZBounds;
            invokevirtual org.apache.lucene.spatial3d.geom.XYZBounds.getMaximumY:()Ljava/lang/Double;
            invokevirtual java.lang.Double.doubleValue:()D
            dreturn
        end local 1 // org.apache.lucene.spatial3d.geom.GeoComplexPolygon$Edge edge
        end local 0 // org.apache.lucene.spatial3d.geom.GeoComplexPolygon$YTree this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/lucene/spatial3d/geom/GeoComplexPolygon$YTree;
            0    1     1  edge  Lorg/apache/lucene/spatial3d/geom/GeoComplexPolygon$Edge;
    MethodParameters:
      Name  Flags
      edge  final
}
SourceFile: "GeoComplexPolygon.java"
NestHost: org.apache.lucene.spatial3d.geom.GeoComplexPolygon
InnerClasses:
  private Edge = org.apache.lucene.spatial3d.geom.GeoComplexPolygon$Edge of org.apache.lucene.spatial3d.geom.GeoComplexPolygon
  private abstract Tree = org.apache.lucene.spatial3d.geom.GeoComplexPolygon$Tree of org.apache.lucene.spatial3d.geom.GeoComplexPolygon
  private YTree = org.apache.lucene.spatial3d.geom.GeoComplexPolygon$YTree of org.apache.lucene.spatial3d.geom.GeoComplexPolygon