http://netty.io/netty-all/: Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients. (The Netty Project) 
public class io.netty.handler.codec.spdy.DefaultSpdyHeaders extends io.netty.handler.codec.DefaultHeaders<java.lang.CharSequence, java.lang.CharSequence, io.netty.handler.codec.spdy.SpdyHeaders> implements io.netty.handler.codec.spdy.SpdyHeaders
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: io.netty.handler.codec.spdy.DefaultSpdyHeaders
  super_class: io.netty.handler.codec.DefaultHeaders
{
  private static final io.netty.handler.codec.DefaultHeaders$NameValidator<java.lang.CharSequence> SpdyNameValidator;
    descriptor: Lio/netty/handler/codec/DefaultHeaders$NameValidator;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    Signature: Lio/netty/handler/codec/DefaultHeaders$NameValidator<Ljava/lang/CharSequence;>;

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 30
            new io.netty.handler.codec.spdy.DefaultSpdyHeaders$1
            dup
            invokespecial io.netty.handler.codec.spdy.DefaultSpdyHeaders$1.<init>:()V
            putstatic io.netty.handler.codec.spdy.DefaultSpdyHeaders.SpdyNameValidator:Lio/netty/handler/codec/DefaultHeaders$NameValidator;
         1: .line 35
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.spdy.DefaultSpdyHeaders this
         0: .line 38
            aload 0 /* this */
            iconst_1
            invokespecial io.netty.handler.codec.spdy.DefaultSpdyHeaders.<init>:(Z)V
         1: .line 39
            return
        end local 0 // io.netty.handler.codec.spdy.DefaultSpdyHeaders this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/netty/handler/codec/spdy/DefaultSpdyHeaders;

  public void <init>(boolean);
    descriptor: (Z)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // io.netty.handler.codec.spdy.DefaultSpdyHeaders this
        start local 1 // boolean validate
         0: .line 43
            aload 0 /* this */
            getstatic io.netty.util.AsciiString.CASE_INSENSITIVE_HASHER:Lio/netty/util/HashingStrategy;
         1: .line 44
            iload 1 /* validate */
            ifeq 2
            getstatic io.netty.handler.codec.spdy.DefaultSpdyHeaders$HeaderValueConverterAndValidator.INSTANCE:Lio/netty/handler/codec/spdy/DefaultSpdyHeaders$HeaderValueConverterAndValidator;
            goto 3
      StackMap locals: uninitialized-this int
      StackMap stack: uninitialized-this io.netty.util.HashingStrategy
         2: getstatic io.netty.handler.codec.CharSequenceValueConverter.INSTANCE:Lio/netty/handler/codec/CharSequenceValueConverter;
         3: .line 45
      StackMap locals: uninitialized-this int
      StackMap stack: uninitialized-this io.netty.util.HashingStrategy io.netty.handler.codec.CharSequenceValueConverter
            iload 1 /* validate */
            ifeq 4
            getstatic io.netty.handler.codec.spdy.DefaultSpdyHeaders.SpdyNameValidator:Lio/netty/handler/codec/DefaultHeaders$NameValidator;
            goto 5
      StackMap locals: uninitialized-this int
      StackMap stack: uninitialized-this io.netty.util.HashingStrategy io.netty.handler.codec.CharSequenceValueConverter
         4: getstatic io.netty.handler.codec.DefaultHeaders$NameValidator.NOT_NULL:Lio/netty/handler/codec/DefaultHeaders$NameValidator;
      StackMap locals: uninitialized-this int
      StackMap stack: uninitialized-this io.netty.util.HashingStrategy io.netty.handler.codec.CharSequenceValueConverter io.netty.handler.codec.DefaultHeaders$NameValidator
         5: invokespecial io.netty.handler.codec.DefaultHeaders.<init>:(Lio/netty/util/HashingStrategy;Lio/netty/handler/codec/ValueConverter;Lio/netty/handler/codec/DefaultHeaders$NameValidator;)V
         6: .line 46
            return
        end local 1 // boolean validate
        end local 0 // io.netty.handler.codec.spdy.DefaultSpdyHeaders this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    7     0      this  Lio/netty/handler/codec/spdy/DefaultSpdyHeaders;
            0    7     1  validate  Z
    MethodParameters:
          Name  Flags
      validate  

  public java.lang.String getAsString(java.lang.CharSequence);
    descriptor: (Ljava/lang/CharSequence;)Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.handler.codec.spdy.DefaultSpdyHeaders this
        start local 1 // java.lang.CharSequence name
         0: .line 50
            aload 0 /* this */
            aload 1 /* name */
            invokestatic io.netty.handler.codec.HeadersUtils.getAsString:(Lio/netty/handler/codec/Headers;Ljava/lang/Object;)Ljava/lang/String;
            areturn
        end local 1 // java.lang.CharSequence name
        end local 0 // io.netty.handler.codec.spdy.DefaultSpdyHeaders this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/spdy/DefaultSpdyHeaders;
            0    1     1  name  Ljava/lang/CharSequence;
    MethodParameters:
      Name  Flags
      name  

  public java.util.List<java.lang.String> getAllAsString(java.lang.CharSequence);
    descriptor: (Ljava/lang/CharSequence;)Ljava/util/List;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.handler.codec.spdy.DefaultSpdyHeaders this
        start local 1 // java.lang.CharSequence name
         0: .line 55
            aload 0 /* this */
            aload 1 /* name */
            invokestatic io.netty.handler.codec.HeadersUtils.getAllAsString:(Lio/netty/handler/codec/Headers;Ljava/lang/Object;)Ljava/util/List;
            areturn
        end local 1 // java.lang.CharSequence name
        end local 0 // io.netty.handler.codec.spdy.DefaultSpdyHeaders this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/spdy/DefaultSpdyHeaders;
            0    1     1  name  Ljava/lang/CharSequence;
    Signature: (Ljava/lang/CharSequence;)Ljava/util/List<Ljava/lang/String;>;
    MethodParameters:
      Name  Flags
      name  

  public java.util.Iterator<java.util.Map$Entry<java.lang.String, java.lang.String>> iteratorAsString();
    descriptor: ()Ljava/util/Iterator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.spdy.DefaultSpdyHeaders this
         0: .line 60
            aload 0 /* this */
            invokestatic io.netty.handler.codec.HeadersUtils.iteratorAsString:(Ljava/lang/Iterable;)Ljava/util/Iterator;
            areturn
        end local 0 // io.netty.handler.codec.spdy.DefaultSpdyHeaders this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/spdy/DefaultSpdyHeaders;
    Signature: ()Ljava/util/Iterator<Ljava/util/Map$Entry<Ljava/lang/String;Ljava/lang/String;>;>;

  public boolean contains(java.lang.CharSequence, java.lang.CharSequence);
    descriptor: (Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=3
        start local 0 // io.netty.handler.codec.spdy.DefaultSpdyHeaders this
        start local 1 // java.lang.CharSequence name
        start local 2 // java.lang.CharSequence value
         0: .line 65
            aload 0 /* this */
            aload 1 /* name */
            aload 2 /* value */
            iconst_0
            invokevirtual io.netty.handler.codec.spdy.DefaultSpdyHeaders.contains:(Ljava/lang/CharSequence;Ljava/lang/CharSequence;Z)Z
            ireturn
        end local 2 // java.lang.CharSequence value
        end local 1 // java.lang.CharSequence name
        end local 0 // io.netty.handler.codec.spdy.DefaultSpdyHeaders this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lio/netty/handler/codec/spdy/DefaultSpdyHeaders;
            0    1     1   name  Ljava/lang/CharSequence;
            0    1     2  value  Ljava/lang/CharSequence;
    MethodParameters:
       Name  Flags
      name   
      value  

  public boolean contains(java.lang.CharSequence, java.lang.CharSequence, boolean);
    descriptor: (Ljava/lang/CharSequence;Ljava/lang/CharSequence;Z)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=4, args_size=4
        start local 0 // io.netty.handler.codec.spdy.DefaultSpdyHeaders this
        start local 1 // java.lang.CharSequence name
        start local 2 // java.lang.CharSequence value
        start local 3 // boolean ignoreCase
         0: .line 70
            aload 0 /* this */
            aload 1 /* name */
            aload 2 /* value */
         1: .line 71
            iload 3 /* ignoreCase */
            ifeq 2
            getstatic io.netty.util.AsciiString.CASE_INSENSITIVE_HASHER:Lio/netty/util/HashingStrategy;
            goto 3
      StackMap locals: io.netty.handler.codec.spdy.DefaultSpdyHeaders java.lang.CharSequence java.lang.CharSequence int
      StackMap stack: io.netty.handler.codec.spdy.DefaultSpdyHeaders java.lang.CharSequence java.lang.CharSequence
         2: getstatic io.netty.util.AsciiString.CASE_SENSITIVE_HASHER:Lio/netty/util/HashingStrategy;
         3: .line 70
      StackMap locals: io.netty.handler.codec.spdy.DefaultSpdyHeaders java.lang.CharSequence java.lang.CharSequence int
      StackMap stack: io.netty.handler.codec.spdy.DefaultSpdyHeaders java.lang.CharSequence java.lang.CharSequence io.netty.util.HashingStrategy
            invokevirtual io.netty.handler.codec.spdy.DefaultSpdyHeaders.contains:(Ljava/lang/Object;Ljava/lang/Object;Lio/netty/util/HashingStrategy;)Z
            ireturn
        end local 3 // boolean ignoreCase
        end local 2 // java.lang.CharSequence value
        end local 1 // java.lang.CharSequence name
        end local 0 // io.netty.handler.codec.spdy.DefaultSpdyHeaders this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    4     0        this  Lio/netty/handler/codec/spdy/DefaultSpdyHeaders;
            0    4     1        name  Ljava/lang/CharSequence;
            0    4     2       value  Ljava/lang/CharSequence;
            0    4     3  ignoreCase  Z
    MethodParameters:
            Name  Flags
      name        
      value       
      ignoreCase  

  public boolean contains(java.lang.Object, java.lang.Object);
    descriptor: (Ljava/lang/Object;Ljava/lang/Object;)Z
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=3, locals=3, args_size=3
         0: .line 1
            aload 0
            aload 1
            checkcast java.lang.CharSequence
            aload 2
            checkcast java.lang.CharSequence
            invokevirtual io.netty.handler.codec.spdy.DefaultSpdyHeaders.contains:(Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Z
            ireturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Lio/netty/handler/codec/DefaultHeaders<Ljava/lang/CharSequence;Ljava/lang/CharSequence;Lio/netty/handler/codec/spdy/SpdyHeaders;>;Lio/netty/handler/codec/spdy/SpdyHeaders;
SourceFile: "DefaultSpdyHeaders.java"
NestMembers:
  io.netty.handler.codec.spdy.DefaultSpdyHeaders$1  io.netty.handler.codec.spdy.DefaultSpdyHeaders$HeaderValueConverterAndValidator
InnerClasses:
  public abstract NameValidator = io.netty.handler.codec.DefaultHeaders$NameValidator of io.netty.handler.codec.DefaultHeaders
  io.netty.handler.codec.spdy.DefaultSpdyHeaders$1
  private final HeaderValueConverterAndValidator = io.netty.handler.codec.spdy.DefaultSpdyHeaders$HeaderValueConverterAndValidator of io.netty.handler.codec.spdy.DefaultSpdyHeaders
  public abstract Entry = java.util.Map$Entry of java.util.Map