https://developers.google.com/protocol-buffers/protobuf-java/: Core Protocol Buffers library. Protocol Buffers are a way of encoding structured data in an efficient yet extensible format. 
public final class com.google.protobuf.WireFormat
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: com.google.protobuf.WireFormat
  super_class: java.lang.Object
{
  static final int FIXED32_SIZE;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 4

  static final int FIXED64_SIZE;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 8

  static final int MAX_VARINT32_SIZE;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 5

  static final int MAX_VARINT64_SIZE;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 10

  static final int MAX_VARINT_SIZE;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 10

  public static final int WIRETYPE_VARINT;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 0

  public static final int WIRETYPE_FIXED64;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  public static final int WIRETYPE_LENGTH_DELIMITED;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 2

  public static final int WIRETYPE_START_GROUP;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 3

  public static final int WIRETYPE_END_GROUP;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 4

  public static final int WIRETYPE_FIXED32;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 5

  static final int TAG_TYPE_BITS;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 3

  static final int TAG_TYPE_MASK;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 7

  static final int MESSAGE_SET_ITEM;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  static final int MESSAGE_SET_TYPE_ID;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 2

  static final int MESSAGE_SET_MESSAGE;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 3

  static final int MESSAGE_SET_ITEM_TAG;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL

  static final int MESSAGE_SET_ITEM_END_TAG;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL

  static final int MESSAGE_SET_TYPE_ID_TAG;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL

  static final int MESSAGE_SET_MESSAGE_TAG;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL

  private static volatile int[] $SWITCH_TABLE$com$google$protobuf$WireFormat$FieldType;
    descriptor: [I
    flags: (0x104a) ACC_PRIVATE, ACC_STATIC, ACC_VOLATILE, ACC_SYNTHETIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 178
            iconst_1
            iconst_3
            invokestatic com.google.protobuf.WireFormat.makeTag:(II)I
            putstatic com.google.protobuf.WireFormat.MESSAGE_SET_ITEM_TAG:I
         1: .line 179
            iconst_1
            iconst_4
            invokestatic com.google.protobuf.WireFormat.makeTag:(II)I
            putstatic com.google.protobuf.WireFormat.MESSAGE_SET_ITEM_END_TAG:I
         2: .line 180
            iconst_2
            iconst_0
            invokestatic com.google.protobuf.WireFormat.makeTag:(II)I
            putstatic com.google.protobuf.WireFormat.MESSAGE_SET_TYPE_ID_TAG:I
         3: .line 182
            iconst_3
            iconst_2
            invokestatic com.google.protobuf.WireFormat.makeTag:(II)I
         4: .line 181
            putstatic com.google.protobuf.WireFormat.MESSAGE_SET_MESSAGE_TAG:I
         5: .line 182
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.protobuf.WireFormat this
         0: .line 47
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.google.protobuf.WireFormat this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/protobuf/WireFormat;

  public static int getTagWireType(int);
    descriptor: (I)I
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // int tag
         0: .line 67
            iload 0 /* tag */
            bipush 7
            iand
            ireturn
        end local 0 // int tag
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0   tag  I
    MethodParameters:
      Name  Flags
      tag   final

  public static int getTagFieldNumber(int);
    descriptor: (I)I
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // int tag
         0: .line 72
            iload 0 /* tag */
            iconst_3
            iushr
            ireturn
        end local 0 // int tag
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0   tag  I
    MethodParameters:
      Name  Flags
      tag   final

  static int makeTag(int, int);
    descriptor: (II)I
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // int fieldNumber
        start local 1 // int wireType
         0: .line 77
            iload 0 /* fieldNumber */
            iconst_3
            ishl
            iload 1 /* wireType */
            ior
            ireturn
        end local 1 // int wireType
        end local 0 // int fieldNumber
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    1     0  fieldNumber  I
            0    1     1     wireType  I
    MethodParameters:
             Name  Flags
      fieldNumber  final
      wireType     final

  static java.lang.Object readPrimitiveField(com.google.protobuf.CodedInputStream, com.google.protobuf.WireFormat$FieldType, com.google.protobuf.WireFormat$Utf8Validation);
    descriptor: (Lcom/google/protobuf/CodedInputStream;Lcom/google/protobuf/WireFormat$FieldType;Lcom/google/protobuf/WireFormat$Utf8Validation;)Ljava/lang/Object;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // com.google.protobuf.CodedInputStream input
        start local 1 // com.google.protobuf.WireFormat$FieldType type
        start local 2 // com.google.protobuf.WireFormat$Utf8Validation utf8Validation
         0: .line 227
            invokestatic com.google.protobuf.WireFormat.$SWITCH_TABLE$com$google$protobuf$WireFormat$FieldType:()[I
            aload 1 /* type */
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            iaload
            tableswitch { // 1 - 18
                    1: 1
                    2: 2
                    3: 3
                    4: 4
                    5: 5
                    6: 6
                    7: 7
                    8: 8
                    9: 15
                   10: 16
                   11: 17
                   12: 9
                   13: 10
                   14: 18
                   15: 11
                   16: 12
                   17: 13
                   18: 14
              default: 19
          }
         1: .line 229
      StackMap locals:
      StackMap stack:
            aload 0 /* input */
            invokevirtual com.google.protobuf.CodedInputStream.readDouble:()D
            invokestatic java.lang.Double.valueOf:(D)Ljava/lang/Double;
            areturn
         2: .line 231
      StackMap locals:
      StackMap stack:
            aload 0 /* input */
            invokevirtual com.google.protobuf.CodedInputStream.readFloat:()F
            invokestatic java.lang.Float.valueOf:(F)Ljava/lang/Float;
            areturn
         3: .line 233
      StackMap locals:
      StackMap stack:
            aload 0 /* input */
            invokevirtual com.google.protobuf.CodedInputStream.readInt64:()J
            invokestatic java.lang.Long.valueOf:(J)Ljava/lang/Long;
            areturn
         4: .line 235
      StackMap locals:
      StackMap stack:
            aload 0 /* input */
            invokevirtual com.google.protobuf.CodedInputStream.readUInt64:()J
            invokestatic java.lang.Long.valueOf:(J)Ljava/lang/Long;
            areturn
         5: .line 237
      StackMap locals:
      StackMap stack:
            aload 0 /* input */
            invokevirtual com.google.protobuf.CodedInputStream.readInt32:()I
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            areturn
         6: .line 239
      StackMap locals:
      StackMap stack:
            aload 0 /* input */
            invokevirtual com.google.protobuf.CodedInputStream.readFixed64:()J
            invokestatic java.lang.Long.valueOf:(J)Ljava/lang/Long;
            areturn
         7: .line 241
      StackMap locals:
      StackMap stack:
            aload 0 /* input */
            invokevirtual com.google.protobuf.CodedInputStream.readFixed32:()I
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            areturn
         8: .line 243
      StackMap locals:
      StackMap stack:
            aload 0 /* input */
            invokevirtual com.google.protobuf.CodedInputStream.readBool:()Z
            invokestatic java.lang.Boolean.valueOf:(Z)Ljava/lang/Boolean;
            areturn
         9: .line 245
      StackMap locals:
      StackMap stack:
            aload 0 /* input */
            invokevirtual com.google.protobuf.CodedInputStream.readBytes:()Lcom/google/protobuf/ByteString;
            areturn
        10: .line 247
      StackMap locals:
      StackMap stack:
            aload 0 /* input */
            invokevirtual com.google.protobuf.CodedInputStream.readUInt32:()I
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            areturn
        11: .line 249
      StackMap locals:
      StackMap stack:
            aload 0 /* input */
            invokevirtual com.google.protobuf.CodedInputStream.readSFixed32:()I
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            areturn
        12: .line 251
      StackMap locals:
      StackMap stack:
            aload 0 /* input */
            invokevirtual com.google.protobuf.CodedInputStream.readSFixed64:()J
            invokestatic java.lang.Long.valueOf:(J)Ljava/lang/Long;
            areturn
        13: .line 253
      StackMap locals:
      StackMap stack:
            aload 0 /* input */
            invokevirtual com.google.protobuf.CodedInputStream.readSInt32:()I
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            areturn
        14: .line 255
      StackMap locals:
      StackMap stack:
            aload 0 /* input */
            invokevirtual com.google.protobuf.CodedInputStream.readSInt64:()J
            invokestatic java.lang.Long.valueOf:(J)Ljava/lang/Long;
            areturn
        15: .line 258
      StackMap locals:
      StackMap stack:
            aload 2 /* utf8Validation */
            aload 0 /* input */
            invokevirtual com.google.protobuf.WireFormat$Utf8Validation.readString:(Lcom/google/protobuf/CodedInputStream;)Ljava/lang/Object;
            areturn
        16: .line 260
      StackMap locals:
      StackMap stack:
            new java.lang.IllegalArgumentException
            dup
            ldc "readPrimitiveField() cannot handle nested groups."
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        17: .line 262
      StackMap locals:
      StackMap stack:
            new java.lang.IllegalArgumentException
            dup
            ldc "readPrimitiveField() cannot handle embedded messages."
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        18: .line 266
      StackMap locals:
      StackMap stack:
            new java.lang.IllegalArgumentException
            dup
            ldc "readPrimitiveField() cannot handle enums."
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        19: .line 269
      StackMap locals:
      StackMap stack:
            new java.lang.RuntimeException
            dup
            ldc "There is no way to get here, but the compiler thinks otherwise."
            invokespecial java.lang.RuntimeException.<init>:(Ljava/lang/String;)V
            athrow
        end local 2 // com.google.protobuf.WireFormat$Utf8Validation utf8Validation
        end local 1 // com.google.protobuf.WireFormat$FieldType type
        end local 0 // com.google.protobuf.CodedInputStream input
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0   20     0           input  Lcom/google/protobuf/CodedInputStream;
            0   20     1            type  Lcom/google/protobuf/WireFormat$FieldType;
            0   20     2  utf8Validation  Lcom/google/protobuf/WireFormat$Utf8Validation;
    Exceptions:
      throws java.io.IOException
    MethodParameters:
                Name  Flags
      input           
      type            
      utf8Validation  

  static int[] $SWITCH_TABLE$com$google$protobuf$WireFormat$FieldType();
    descriptor: ()[I
    flags: (0x1008) ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=3, locals=1, args_size=0
         0: .line 45
            getstatic com.google.protobuf.WireFormat.$SWITCH_TABLE$com$google$protobuf$WireFormat$FieldType:[I
            dup
            ifnull 1
            areturn
      StackMap locals:
      StackMap stack: int[]
         1: pop
            invokestatic com.google.protobuf.WireFormat$FieldType.values:()[Lcom/google/protobuf/WireFormat$FieldType;
            arraylength
            newarray 10
            astore 0
         2: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.BOOL:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            bipush 8
            iastore
         3: goto 5
      StackMap locals: int[]
      StackMap stack: java.lang.NoSuchFieldError
         4: pop
      StackMap locals:
      StackMap stack:
         5: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.BYTES:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            bipush 12
            iastore
         6: goto 8
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
         7: pop
      StackMap locals:
      StackMap stack:
         8: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.DOUBLE:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            iconst_1
            iastore
         9: goto 11
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        10: pop
      StackMap locals:
      StackMap stack:
        11: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.ENUM:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            bipush 14
            iastore
        12: goto 14
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        13: pop
      StackMap locals:
      StackMap stack:
        14: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.FIXED32:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            bipush 7
            iastore
        15: goto 17
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        16: pop
      StackMap locals:
      StackMap stack:
        17: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.FIXED64:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            bipush 6
            iastore
        18: goto 20
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        19: pop
      StackMap locals:
      StackMap stack:
        20: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.FLOAT:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            iconst_2
            iastore
        21: goto 23
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        22: pop
      StackMap locals:
      StackMap stack:
        23: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.GROUP:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            bipush 10
            iastore
        24: goto 26
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        25: pop
      StackMap locals:
      StackMap stack:
        26: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.INT32:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            iconst_5
            iastore
        27: goto 29
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        28: pop
      StackMap locals:
      StackMap stack:
        29: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.INT64:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            iconst_3
            iastore
        30: goto 32
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        31: pop
      StackMap locals:
      StackMap stack:
        32: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.MESSAGE:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            bipush 11
            iastore
        33: goto 35
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        34: pop
      StackMap locals:
      StackMap stack:
        35: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.SFIXED32:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            bipush 15
            iastore
        36: goto 38
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        37: pop
      StackMap locals:
      StackMap stack:
        38: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.SFIXED64:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            bipush 16
            iastore
        39: goto 41
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        40: pop
      StackMap locals:
      StackMap stack:
        41: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.SINT32:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            bipush 17
            iastore
        42: goto 44
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        43: pop
      StackMap locals:
      StackMap stack:
        44: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.SINT64:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            bipush 18
            iastore
        45: goto 47
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        46: pop
      StackMap locals:
      StackMap stack:
        47: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.STRING:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            bipush 9
            iastore
        48: goto 50
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        49: pop
      StackMap locals:
      StackMap stack:
        50: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.UINT32:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            bipush 13
            iastore
        51: goto 53
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        52: pop
      StackMap locals:
      StackMap stack:
        53: aload 0
            getstatic com.google.protobuf.WireFormat$FieldType.UINT64:Lcom/google/protobuf/WireFormat$FieldType;
            invokevirtual com.google.protobuf.WireFormat$FieldType.ordinal:()I
            iconst_4
            iastore
        54: goto 56
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        55: pop
      StackMap locals:
      StackMap stack:
        56: aload 0
            dup
            putstatic com.google.protobuf.WireFormat.$SWITCH_TABLE$com$google$protobuf$WireFormat$FieldType:[I
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
      Exception table:
        from    to  target  type
           2     3       4  Class java.lang.NoSuchFieldError
           5     6       7  Class java.lang.NoSuchFieldError
           8     9      10  Class java.lang.NoSuchFieldError
          11    12      13  Class java.lang.NoSuchFieldError
          14    15      16  Class java.lang.NoSuchFieldError
          17    18      19  Class java.lang.NoSuchFieldError
          20    21      22  Class java.lang.NoSuchFieldError
          23    24      25  Class java.lang.NoSuchFieldError
          26    27      28  Class java.lang.NoSuchFieldError
          29    30      31  Class java.lang.NoSuchFieldError
          32    33      34  Class java.lang.NoSuchFieldError
          35    36      37  Class java.lang.NoSuchFieldError
          38    39      40  Class java.lang.NoSuchFieldError
          41    42      43  Class java.lang.NoSuchFieldError
          44    45      46  Class java.lang.NoSuchFieldError
          47    48      49  Class java.lang.NoSuchFieldError
          50    51      52  Class java.lang.NoSuchFieldError
          53    54      55  Class java.lang.NoSuchFieldError
}
SourceFile: "WireFormat.java"
NestMembers:
  com.google.protobuf.WireFormat$FieldType  com.google.protobuf.WireFormat$FieldType$1  com.google.protobuf.WireFormat$FieldType$2  com.google.protobuf.WireFormat$FieldType$3  com.google.protobuf.WireFormat$FieldType$4  com.google.protobuf.WireFormat$JavaType  com.google.protobuf.WireFormat$Utf8Validation  com.google.protobuf.WireFormat$Utf8Validation$1  com.google.protobuf.WireFormat$Utf8Validation$2  com.google.protobuf.WireFormat$Utf8Validation$3
InnerClasses:
  public FieldType = com.google.protobuf.WireFormat$FieldType of com.google.protobuf.WireFormat
  public final JavaType = com.google.protobuf.WireFormat$JavaType of com.google.protobuf.WireFormat
  abstract Utf8Validation = com.google.protobuf.WireFormat$Utf8Validation of com.google.protobuf.WireFormat