https://www.graalvm.org/ 
public final class org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase$PostAllocationOptimizationContext
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase$PostAllocationOptimizationContext
  super_class: java.lang.Object
{
  public final org.graalvm.compiler.lir.gen.DiagnosticLIRGeneratorTool diagnosticLirGenTool;
    descriptor: Lorg/graalvm/compiler/lir/gen/DiagnosticLIRGeneratorTool;
    flags: (0x0011) ACC_PUBLIC, ACC_FINAL

  public void <init>(org.graalvm.compiler.lir.gen.DiagnosticLIRGeneratorTool);
    descriptor: (Lorg/graalvm/compiler/lir/gen/DiagnosticLIRGeneratorTool;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase$PostAllocationOptimizationContext this
        start local 1 // org.graalvm.compiler.lir.gen.DiagnosticLIRGeneratorTool diagnosticTool
         0: .line 34
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 35
            aload 0 /* this */
            aload 1 /* diagnosticTool */
            putfield org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase$PostAllocationOptimizationContext.diagnosticLirGenTool:Lorg/graalvm/compiler/lir/gen/DiagnosticLIRGeneratorTool;
         2: .line 36
            return
        end local 1 // org.graalvm.compiler.lir.gen.DiagnosticLIRGeneratorTool diagnosticTool
        end local 0 // org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase$PostAllocationOptimizationContext this
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0    3     0            this  Lorg/graalvm/compiler/lir/phases/PostAllocationOptimizationPhase$PostAllocationOptimizationContext;
            0    3     1  diagnosticTool  Lorg/graalvm/compiler/lir/gen/DiagnosticLIRGeneratorTool;
    MethodParameters:
                Name  Flags
      diagnosticTool  
}
SourceFile: "PostAllocationOptimizationPhase.java"
NestHost: org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase
InnerClasses:
  public final PostAllocationOptimizationContext = org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase$PostAllocationOptimizationContext of org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase