http://findbugs.sourceforge.net/: Findbugs: Because it's easy! 
class edu.umd.cs.findbugs.BugInstance$BugPropertyIterator implements java.util.Iterator<edu.umd.cs.findbugs.BugProperty>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: edu.umd.cs.findbugs.BugInstance$BugPropertyIterator
  super_class: java.lang.Object
{
  private edu.umd.cs.findbugs.BugProperty prev;
    descriptor: Ledu/umd/cs/findbugs/BugProperty;
    flags: (0x0002) ACC_PRIVATE

  private edu.umd.cs.findbugs.BugProperty cur;
    descriptor: Ledu/umd/cs/findbugs/BugProperty;
    flags: (0x0002) ACC_PRIVATE

  private boolean removed;
    descriptor: Z
    flags: (0x0002) ACC_PRIVATE

  final edu.umd.cs.findbugs.BugInstance this$0;
    descriptor: Ledu/umd/cs/findbugs/BugInstance;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private void <init>(edu.umd.cs.findbugs.BugInstance);
    descriptor: (Ledu/umd/cs/findbugs/BugInstance;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // edu.umd.cs.findbugs.BugInstance$BugPropertyIterator this
         0: .line 867
            aload 0 /* this */
            aload 1
            putfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.this$0:Ledu/umd/cs/findbugs/BugInstance;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // edu.umd.cs.findbugs.BugInstance$BugPropertyIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Ledu/umd/cs/findbugs/BugInstance$BugPropertyIterator;
    MethodParameters:
        Name  Flags
      this$0  final

  public boolean hasNext();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // edu.umd.cs.findbugs.BugInstance$BugPropertyIterator this
         0: .line 874
            aload 0 /* this */
            invokevirtual edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.findNext:()Ledu/umd/cs/findbugs/BugProperty;
            ifnull 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 0 // edu.umd.cs.findbugs.BugInstance$BugPropertyIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Ledu/umd/cs/findbugs/BugInstance$BugPropertyIterator;

  public edu.umd.cs.findbugs.BugProperty next();
    descriptor: ()Ledu/umd/cs/findbugs/BugProperty;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // edu.umd.cs.findbugs.BugInstance$BugPropertyIterator this
         0: .line 879
            aload 0 /* this */
            invokevirtual edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.findNext:()Ledu/umd/cs/findbugs/BugProperty;
            astore 1 /* next */
        start local 1 // edu.umd.cs.findbugs.BugProperty next
         1: .line 880
            aload 1 /* next */
            ifnonnull 3
         2: .line 881
            new java.util.NoSuchElementException
            dup
            invokespecial java.util.NoSuchElementException.<init>:()V
            athrow
         3: .line 883
      StackMap locals: edu.umd.cs.findbugs.BugProperty
      StackMap stack:
            aload 0 /* this */
            aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.cur:Ledu/umd/cs/findbugs/BugProperty;
            putfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.prev:Ledu/umd/cs/findbugs/BugProperty;
         4: .line 884
            aload 0 /* this */
            aload 1 /* next */
            putfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.cur:Ledu/umd/cs/findbugs/BugProperty;
         5: .line 885
            aload 0 /* this */
            iconst_0
            putfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.removed:Z
         6: .line 886
            aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.cur:Ledu/umd/cs/findbugs/BugProperty;
            areturn
        end local 1 // edu.umd.cs.findbugs.BugProperty next
        end local 0 // edu.umd.cs.findbugs.BugInstance$BugPropertyIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    7     0  this  Ledu/umd/cs/findbugs/BugInstance$BugPropertyIterator;
            1    7     1  next  Ledu/umd/cs/findbugs/BugProperty;

  public void remove();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // edu.umd.cs.findbugs.BugInstance$BugPropertyIterator this
         0: .line 891
            aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.cur:Ledu/umd/cs/findbugs/BugProperty;
            ifnull 1
            aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.removed:Z
            ifeq 2
         1: .line 892
      StackMap locals:
      StackMap stack:
            new java.lang.IllegalStateException
            dup
            invokespecial java.lang.IllegalStateException.<init>:()V
            athrow
         2: .line 894
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.prev:Ledu/umd/cs/findbugs/BugProperty;
            ifnonnull 5
         3: .line 895
            aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.this$0:Ledu/umd/cs/findbugs/BugInstance;
            aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.cur:Ledu/umd/cs/findbugs/BugProperty;
            invokevirtual edu.umd.cs.findbugs.BugProperty.getNext:()Ledu/umd/cs/findbugs/BugProperty;
            putfield edu.umd.cs.findbugs.BugInstance.propertyListHead:Ledu/umd/cs/findbugs/BugProperty;
         4: .line 896
            goto 6
         5: .line 897
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.prev:Ledu/umd/cs/findbugs/BugProperty;
            aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.cur:Ledu/umd/cs/findbugs/BugProperty;
            invokevirtual edu.umd.cs.findbugs.BugProperty.getNext:()Ledu/umd/cs/findbugs/BugProperty;
            invokevirtual edu.umd.cs.findbugs.BugProperty.setNext:(Ledu/umd/cs/findbugs/BugProperty;)V
         6: .line 899
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.cur:Ledu/umd/cs/findbugs/BugProperty;
            aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.this$0:Ledu/umd/cs/findbugs/BugInstance;
            getfield edu.umd.cs.findbugs.BugInstance.propertyListTail:Ledu/umd/cs/findbugs/BugProperty;
            if_acmpne 8
         7: .line 900
            aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.this$0:Ledu/umd/cs/findbugs/BugInstance;
            aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.prev:Ledu/umd/cs/findbugs/BugProperty;
            putfield edu.umd.cs.findbugs.BugInstance.propertyListTail:Ledu/umd/cs/findbugs/BugProperty;
         8: .line 902
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            iconst_1
            putfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.removed:Z
         9: .line 903
            return
        end local 0 // edu.umd.cs.findbugs.BugInstance$BugPropertyIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0   10     0  this  Ledu/umd/cs/findbugs/BugInstance$BugPropertyIterator;

  private edu.umd.cs.findbugs.BugProperty findNext();
    descriptor: ()Ledu/umd/cs/findbugs/BugProperty;
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // edu.umd.cs.findbugs.BugInstance$BugPropertyIterator this
         0: .line 906
            aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.cur:Ledu/umd/cs/findbugs/BugProperty;
            ifnonnull 1
            aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.this$0:Ledu/umd/cs/findbugs/BugInstance;
            getfield edu.umd.cs.findbugs.BugInstance.propertyListHead:Ledu/umd/cs/findbugs/BugProperty;
            goto 2
      StackMap locals:
      StackMap stack:
         1: aload 0 /* this */
            getfield edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.cur:Ledu/umd/cs/findbugs/BugProperty;
            invokevirtual edu.umd.cs.findbugs.BugProperty.getNext:()Ledu/umd/cs/findbugs/BugProperty;
      StackMap locals:
      StackMap stack: edu.umd.cs.findbugs.BugProperty
         2: areturn
        end local 0 // edu.umd.cs.findbugs.BugInstance$BugPropertyIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Ledu/umd/cs/findbugs/BugInstance$BugPropertyIterator;

  public java.lang.Object next();
    descriptor: ()Ljava/lang/Object;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual edu.umd.cs.findbugs.BugInstance$BugPropertyIterator.next:()Ledu/umd/cs/findbugs/BugProperty;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/lang/Object;Ljava/util/Iterator<Ledu/umd/cs/findbugs/BugProperty;>;
SourceFile: "BugInstance.java"
NestHost: edu.umd.cs.findbugs.BugInstance
InnerClasses:
  private BugPropertyIterator = edu.umd.cs.findbugs.BugInstance$BugPropertyIterator of edu.umd.cs.findbugs.BugInstance