https://openjdk.java.net/projects/openjfx/javafx-graphics/: OpenJFX JavaFX
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public interface javafx.animation.Interpolatable<T>
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javafx.animation.Interpolatable
  super_class: java.lang.Object
{
  public abstract T interpolate(T, );
    descriptor: (Ljava/lang/Object;D)Ljava/lang/Object;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: (TT;D)TT;
    MethodParameters:
          Name  Flags
      endValue  
      t         
}
Signature: <T:Ljava/lang/Object;>Ljava/lang/Object;
SourceFile: "Interpolatable.java"
    RuntimeVisibleAnnotations: 
      java.lang.FunctionalInterface()