https://openjdk.java.net/projects/openjfx/javafx-base/: OpenJFX JavaFX
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public interface com.sun.javafx.collections.IntegerArraySyncer
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.sun.javafx.collections.IntegerArraySyncer
  super_class: java.lang.Object
{
  public abstract int[] syncTo(int[], int[]);
    descriptor: ([I[I)[I
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
                      Name  Flags
      array                 
      fromAndLengthIndices  
}
SourceFile: "IntegerArraySyncer.java"