https://github.com/oracle/graal: GraalVM is an ecosystem for compiling and running applications written in multiple languages. GraalVM removes the isolation between programming languages and enables interoperability in a shared runtime. 
interface org.graalvm.nativeimage.StackValueSnippets$ComplexValue extends org.graalvm.word.PointerBase
  minor version: 0
  major version: 59
  flags: flags: (0x0600) ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.graalvm.nativeimage.StackValueSnippets$ComplexValue
  super_class: java.lang.Object
{
  public abstract double realPart();
    descriptor: ()D
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.c.struct.CField(value = "re")

  public abstract void realPart(double);
    descriptor: (D)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.c.struct.CField(value = "re")
    MethodParameters:
      Name  Flags
      re    

  public abstract double imagineryPart();
    descriptor: ()D
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.c.struct.CField(value = "im")

  public abstract void imagineryPart(double);
    descriptor: (D)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.c.struct.CField(value = "im")
    MethodParameters:
      Name  Flags
      im    
}
SourceFile: "StackValue.java"
NestHost: org.graalvm.nativeimage.StackValueSnippets
InnerClasses:
  abstract ComplexValue = org.graalvm.nativeimage.StackValueSnippets$ComplexValue of org.graalvm.nativeimage.StackValueSnippets
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.c.struct.CStruct()