http://www.jboss.org/undertow-parent/undertow-core: Undertow (JBoss by Red Hat) 
public class io.undertow.conduits.DebuggingStreamSourceConduit extends org.xnio.conduits.AbstractStreamSourceConduit<org.xnio.conduits.StreamSourceConduit>
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: io.undertow.conduits.DebuggingStreamSourceConduit
  super_class: org.xnio.conduits.AbstractStreamSourceConduit
{
  private static final java.util.List<byte[]> data;
    descriptor: Ljava/util/List;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    Signature: Ljava/util/List<[B>;

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 43
            new java.util.concurrent.CopyOnWriteArrayList
            dup
            invokespecial java.util.concurrent.CopyOnWriteArrayList.<init>:()V
            putstatic io.undertow.conduits.DebuggingStreamSourceConduit.data:Ljava/util/List;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>(org.xnio.conduits.StreamSourceConduit);
    descriptor: (Lorg/xnio/conduits/StreamSourceConduit;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.undertow.conduits.DebuggingStreamSourceConduit this
        start local 1 // org.xnio.conduits.StreamSourceConduit next
         0: .line 51
            aload 0 /* this */
            aload 1 /* next */
            invokespecial org.xnio.conduits.AbstractStreamSourceConduit.<init>:(Lorg/xnio/conduits/StreamSourceConduit;)V
         1: .line 52
            return
        end local 1 // org.xnio.conduits.StreamSourceConduit next
        end local 0 // io.undertow.conduits.DebuggingStreamSourceConduit this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/undertow/conduits/DebuggingStreamSourceConduit;
            0    2     1  next  Lorg/xnio/conduits/StreamSourceConduit;
    MethodParameters:
      Name  Flags
      next  

  public long transferTo(long, long, java.nio.channels.FileChannel);
    descriptor: (JJLjava/nio/channels/FileChannel;)J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=6, args_size=4
        start local 0 // io.undertow.conduits.DebuggingStreamSourceConduit this
        start local 1 // long position
        start local 3 // long count
        start local 5 // java.nio.channels.FileChannel target
         0: .line 55
            aload 5 /* target */
            new org.xnio.conduits.ConduitReadableByteChannel
            dup
            aload 0 /* this */
            invokespecial org.xnio.conduits.ConduitReadableByteChannel.<init>:(Lorg/xnio/conduits/StreamSourceConduit;)V
            lload 1 /* position */
            lload 3 /* count */
            invokevirtual java.nio.channels.FileChannel.transferFrom:(Ljava/nio/channels/ReadableByteChannel;JJ)J
            lreturn
        end local 5 // java.nio.channels.FileChannel target
        end local 3 // long count
        end local 1 // long position
        end local 0 // io.undertow.conduits.DebuggingStreamSourceConduit this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    1     0      this  Lio/undertow/conduits/DebuggingStreamSourceConduit;
            0    1     1  position  J
            0    1     3     count  J
            0    1     5    target  Ljava/nio/channels/FileChannel;
    Exceptions:
      throws java.io.IOException
    MethodParameters:
          Name  Flags
      position  final
      count     final
      target    final

  public long transferTo(long, java.nio.ByteBuffer, org.xnio.channels.StreamSinkChannel);
    descriptor: (JLjava/nio/ByteBuffer;Lorg/xnio/channels/StreamSinkChannel;)J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=5, args_size=4
        start local 0 // io.undertow.conduits.DebuggingStreamSourceConduit this
        start local 1 // long count
        start local 3 // java.nio.ByteBuffer throughBuffer
        start local 4 // org.xnio.channels.StreamSinkChannel target
         0: .line 59
            new org.xnio.conduits.ConduitReadableByteChannel
            dup
            aload 0 /* this */
            invokespecial org.xnio.conduits.ConduitReadableByteChannel.<init>:(Lorg/xnio/conduits/StreamSourceConduit;)V
            lload 1 /* count */
            aload 3 /* throughBuffer */
            aload 4 /* target */
            invokestatic org.xnio.IoUtils.transfer:(Ljava/nio/channels/ReadableByteChannel;JLjava/nio/ByteBuffer;Ljava/nio/channels/WritableByteChannel;)J
            lreturn
        end local 4 // org.xnio.channels.StreamSinkChannel target
        end local 3 // java.nio.ByteBuffer throughBuffer
        end local 1 // long count
        end local 0 // io.undertow.conduits.DebuggingStreamSourceConduit this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    1     0           this  Lio/undertow/conduits/DebuggingStreamSourceConduit;
            0    1     1          count  J
            0    1     3  throughBuffer  Ljava/nio/ByteBuffer;
            0    1     4         target  Lorg/xnio/channels/StreamSinkChannel;
    Exceptions:
      throws java.io.IOException
    MethodParameters:
               Name  Flags
      count          final
      throughBuffer  final
      target         final

  public int read(java.nio.ByteBuffer);
    descriptor: (Ljava/nio/ByteBuffer;)I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=6, args_size=2
        start local 0 // io.undertow.conduits.DebuggingStreamSourceConduit this
        start local 1 // java.nio.ByteBuffer dst
         0: .line 64
            aload 1 /* dst */
            invokevirtual java.nio.ByteBuffer.position:()I
            istore 2 /* pos */
        start local 2 // int pos
         1: .line 65
            aload 0 /* this */
            aload 1 /* dst */
            invokespecial org.xnio.conduits.AbstractStreamSourceConduit.read:(Ljava/nio/ByteBuffer;)I
            istore 3 /* res */
        start local 3 // int res
         2: .line 66
            iload 3 /* res */
            ifle 10
         3: .line 67
            iload 3 /* res */
            newarray 8
            astore 4 /* d */
        start local 4 // byte[] d
         4: .line 68
            iconst_0
            istore 5 /* i */
        start local 5 // int i
         5: goto 8
         6: .line 69
      StackMap locals: io.undertow.conduits.DebuggingStreamSourceConduit java.nio.ByteBuffer int int byte[] int
      StackMap stack:
            aload 4 /* d */
            iload 5 /* i */
            aload 1 /* dst */
            iload 5 /* i */
            iload 2 /* pos */
            iadd
            invokevirtual java.nio.ByteBuffer.get:(I)B
            bastore
         7: .line 68
            iinc 5 /* i */ 1
      StackMap locals:
      StackMap stack:
         8: iload 5 /* i */
            iload 3 /* res */
            if_icmplt 6
        end local 5 // int i
         9: .line 71
            getstatic io.undertow.conduits.DebuggingStreamSourceConduit.data:Ljava/util/List;
            aload 4 /* d */
            invokeinterface java.util.List.add:(Ljava/lang/Object;)Z
            pop
        end local 4 // byte[] d
        10: .line 73
      StackMap locals:
      StackMap stack:
            iload 3 /* res */
            ireturn
        end local 3 // int res
        end local 2 // int pos
        end local 1 // java.nio.ByteBuffer dst
        end local 0 // io.undertow.conduits.DebuggingStreamSourceConduit this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0   11     0  this  Lio/undertow/conduits/DebuggingStreamSourceConduit;
            0   11     1   dst  Ljava/nio/ByteBuffer;
            1   11     2   pos  I
            2   11     3   res  I
            4   10     4     d  [B
            5    9     5     i  I
    Exceptions:
      throws java.io.IOException
    MethodParameters:
      Name  Flags
      dst   

  public long read(java.nio.ByteBuffer[], int, int);
    descriptor: ([Ljava/nio/ByteBuffer;II)J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=5, args_size=4
        start local 0 // io.undertow.conduits.DebuggingStreamSourceConduit this
        start local 1 // java.nio.ByteBuffer[] dsts
        start local 2 // int offs
        start local 3 // int len
         0: .line 78
            iload 2 /* offs */
            istore 4 /* i */
        start local 4 // int i
         1: goto 5
         2: .line 79
      StackMap locals: int
      StackMap stack:
            aload 1 /* dsts */
            iload 4 /* i */
            aaload
            invokevirtual java.nio.ByteBuffer.hasRemaining:()Z
            ifeq 4
         3: .line 80
            aload 0 /* this */
            aload 1 /* dsts */
            iload 4 /* i */
            aaload
            invokevirtual io.undertow.conduits.DebuggingStreamSourceConduit.read:(Ljava/nio/ByteBuffer;)I
            i2l
            lreturn
         4: .line 78
      StackMap locals:
      StackMap stack:
            iinc 4 /* i */ 1
      StackMap locals:
      StackMap stack:
         5: iload 4 /* i */
            iload 3 /* len */
            if_icmplt 2
        end local 4 // int i
         6: .line 83
            lconst_0
            lreturn
        end local 3 // int len
        end local 2 // int offs
        end local 1 // java.nio.ByteBuffer[] dsts
        end local 0 // io.undertow.conduits.DebuggingStreamSourceConduit this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    7     0  this  Lio/undertow/conduits/DebuggingStreamSourceConduit;
            0    7     1  dsts  [Ljava/nio/ByteBuffer;
            0    7     2  offs  I
            0    7     3   len  I
            1    6     4     i  I
    Exceptions:
      throws java.io.IOException
    MethodParameters:
      Name  Flags
      dsts  
      offs  
      len   

  public static void dump();
    descriptor: ()V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=4, locals=3, args_size=0
         0: .line 88
            iconst_0
            istore 0 /* i */
        start local 0 // int i
         1: goto 11
         2: .line 89
      StackMap locals: int
      StackMap stack:
            getstatic java.lang.System.out:Ljava/io/PrintStream;
            new java.lang.StringBuilder
            dup
            ldc "Buffer "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            iload 0 /* i */
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokevirtual java.io.PrintStream.println:(Ljava/lang/String;)V
         3: .line 90
            new java.lang.StringBuilder
            dup
            invokespecial java.lang.StringBuilder.<init>:()V
            astore 1 /* sb */
        start local 1 // java.lang.StringBuilder sb
         4: .line 92
            getstatic io.undertow.conduits.DebuggingStreamSourceConduit.data:Ljava/util/List;
            iload 0 /* i */
            invokeinterface java.util.List.get:(I)Ljava/lang/Object;
            checkcast byte[]
            invokestatic java.nio.ByteBuffer.wrap:([B)Ljava/nio/ByteBuffer;
            aload 1 /* sb */
            iconst_0
            bipush 20
            invokestatic org.xnio.Buffers.dump:(Ljava/nio/ByteBuffer;Ljava/lang/Appendable;II)V
         5: .line 93
            goto 8
      StackMap locals: int java.lang.StringBuilder
      StackMap stack: java.io.IOException
         6: astore 2 /* e */
        start local 2 // java.io.IOException e
         7: .line 94
            new java.lang.RuntimeException
            dup
            aload 2 /* e */
            invokespecial java.lang.RuntimeException.<init>:(Ljava/lang/Throwable;)V
            athrow
        end local 2 // java.io.IOException e
         8: .line 96
      StackMap locals:
      StackMap stack:
            getstatic java.lang.System.out:Ljava/io/PrintStream;
            aload 1 /* sb */
            invokevirtual java.io.PrintStream.println:(Ljava/lang/Object;)V
         9: .line 97
            getstatic java.lang.System.out:Ljava/io/PrintStream;
            invokevirtual java.io.PrintStream.println:()V
        end local 1 // java.lang.StringBuilder sb
        10: .line 88
            iinc 0 /* i */ 1
      StackMap locals:
      StackMap stack:
        11: iload 0 /* i */
            getstatic io.undertow.conduits.DebuggingStreamSourceConduit.data:Ljava/util/List;
            invokeinterface java.util.List.size:()I
            if_icmplt 2
        end local 0 // int i
        12: .line 100
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            1   12     0     i  I
            4   10     1    sb  Ljava/lang/StringBuilder;
            7    8     2     e  Ljava/io/IOException;
      Exception table:
        from    to  target  type
           4     5       6  Class java.io.IOException
}
Signature: Lorg/xnio/conduits/AbstractStreamSourceConduit<Lorg/xnio/conduits/StreamSourceConduit;>;
SourceFile: "DebuggingStreamSourceConduit.java"