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. 
final class com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor extends com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularFieldAccessor
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor
  super_class: com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularFieldAccessor
{
  private com.google.protobuf.Descriptors$EnumDescriptor enumDescriptor;
    descriptor: Lcom/google/protobuf/Descriptors$EnumDescriptor;
    flags: (0x0002) ACC_PRIVATE

  private java.lang.reflect.Method valueOfMethod;
    descriptor: Ljava/lang/reflect/Method;
    flags: (0x0002) ACC_PRIVATE

  private java.lang.reflect.Method getValueDescriptorMethod;
    descriptor: Ljava/lang/reflect/Method;
    flags: (0x0002) ACC_PRIVATE

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

  private java.lang.reflect.Method getValueMethod;
    descriptor: Ljava/lang/reflect/Method;
    flags: (0x0002) ACC_PRIVATE

  private java.lang.reflect.Method getValueMethodBuilder;
    descriptor: Ljava/lang/reflect/Method;
    flags: (0x0002) ACC_PRIVATE

  private java.lang.reflect.Method setValueMethod;
    descriptor: Ljava/lang/reflect/Method;
    flags: (0x0002) ACC_PRIVATE

  void <init>(com.google.protobuf.Descriptors$FieldDescriptor, java.lang.String, java.lang.Class<? extends com.google.protobuf.GeneratedMessageV3>, java.lang.Class<? extends com.google.protobuf.GeneratedMessageV3$Builder>, java.lang.String);
    descriptor: (Lcom/google/protobuf/Descriptors$FieldDescriptor;Ljava/lang/String;Ljava/lang/Class;Ljava/lang/Class;Ljava/lang/String;)V
    flags: (0x0000) 
    Code:
      stack=7, locals=6, args_size=6
        start local 0 // com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor this
        start local 1 // com.google.protobuf.Descriptors$FieldDescriptor descriptor
        start local 2 // java.lang.String camelCaseName
        start local 3 // java.lang.Class messageClass
        start local 4 // java.lang.Class builderClass
        start local 5 // java.lang.String containingOneofCamelCaseName
         0: .line 2975
            aload 0 /* this */
            aload 1 /* descriptor */
            aload 2 /* camelCaseName */
            aload 3 /* messageClass */
            aload 4 /* builderClass */
            aload 5 /* containingOneofCamelCaseName */
            invokespecial com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularFieldAccessor.<init>:(Lcom/google/protobuf/Descriptors$FieldDescriptor;Ljava/lang/String;Ljava/lang/Class;Ljava/lang/Class;Ljava/lang/String;)V
         1: .line 2977
            aload 0 /* this */
            aload 1 /* descriptor */
            invokevirtual com.google.protobuf.Descriptors$FieldDescriptor.getEnumType:()Lcom/google/protobuf/Descriptors$EnumDescriptor;
            putfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.enumDescriptor:Lcom/google/protobuf/Descriptors$EnumDescriptor;
         2: .line 2979
            aload 0 /* this */
            aload 0 /* this */
            getfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.type:Ljava/lang/Class;
            ldc "valueOf"
            iconst_1
            anewarray java.lang.Class
            dup
            iconst_0
            ldc Lcom/google/protobuf/Descriptors$EnumValueDescriptor;
            aastore
            invokestatic com.google.protobuf.GeneratedMessageV3.getMethodOrDie:(Ljava/lang/Class;Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
            putfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.valueOfMethod:Ljava/lang/reflect/Method;
         3: .line 2980
            aload 0 /* this */
            aload 0 /* this */
            getfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.type:Ljava/lang/Class;
            ldc "getValueDescriptor"
            iconst_0
            anewarray java.lang.Class
            invokestatic com.google.protobuf.GeneratedMessageV3.getMethodOrDie:(Ljava/lang/Class;Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
            putfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.getValueDescriptorMethod:Ljava/lang/reflect/Method;
         4: .line 2982
            aload 0 /* this */
            aload 1 /* descriptor */
            invokevirtual com.google.protobuf.Descriptors$FieldDescriptor.getFile:()Lcom/google/protobuf/Descriptors$FileDescriptor;
            invokevirtual com.google.protobuf.Descriptors$FileDescriptor.supportsUnknownEnumValue:()Z
            putfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.supportUnknownEnumValue:Z
         5: .line 2983
            aload 0 /* this */
            getfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.supportUnknownEnumValue:Z
            ifeq 15
         6: .line 2984
            aload 0 /* this */
         7: .line 2985
            aload 3 /* messageClass */
            new java.lang.StringBuilder
            dup
            ldc "get"
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 2 /* camelCaseName */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc "Value"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            iconst_0
            anewarray java.lang.Class
            invokestatic com.google.protobuf.GeneratedMessageV3.getMethodOrDie:(Ljava/lang/Class;Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
         8: .line 2984
            putfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.getValueMethod:Ljava/lang/reflect/Method;
         9: .line 2986
            aload 0 /* this */
        10: .line 2987
            aload 4 /* builderClass */
            new java.lang.StringBuilder
            dup
            ldc "get"
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 2 /* camelCaseName */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc "Value"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            iconst_0
            anewarray java.lang.Class
            invokestatic com.google.protobuf.GeneratedMessageV3.getMethodOrDie:(Ljava/lang/Class;Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
        11: .line 2986
            putfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.getValueMethodBuilder:Ljava/lang/reflect/Method;
        12: .line 2988
            aload 0 /* this */
        13: .line 2989
            aload 4 /* builderClass */
            new java.lang.StringBuilder
            dup
            ldc "set"
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 2 /* camelCaseName */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc "Value"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            iconst_1
            anewarray java.lang.Class
            dup
            iconst_0
            getstatic java.lang.Integer.TYPE:Ljava/lang/Class;
            aastore
            invokestatic com.google.protobuf.GeneratedMessageV3.getMethodOrDie:(Ljava/lang/Class;Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
        14: .line 2988
            putfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.setValueMethod:Ljava/lang/reflect/Method;
        15: .line 2991
      StackMap locals: com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor com.google.protobuf.Descriptors$FieldDescriptor java.lang.String java.lang.Class java.lang.Class java.lang.String
      StackMap stack:
            return
        end local 5 // java.lang.String containingOneofCamelCaseName
        end local 4 // java.lang.Class builderClass
        end local 3 // java.lang.Class messageClass
        end local 2 // java.lang.String camelCaseName
        end local 1 // com.google.protobuf.Descriptors$FieldDescriptor descriptor
        end local 0 // com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor this
      LocalVariableTable:
        Start  End  Slot                          Name  Signature
            0   16     0                          this  Lcom/google/protobuf/GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor;
            0   16     1                    descriptor  Lcom/google/protobuf/Descriptors$FieldDescriptor;
            0   16     2                 camelCaseName  Ljava/lang/String;
            0   16     3                  messageClass  Ljava/lang/Class<+Lcom/google/protobuf/GeneratedMessageV3;>;
            0   16     4                  builderClass  Ljava/lang/Class<+Lcom/google/protobuf/GeneratedMessageV3$Builder;>;
            0   16     5  containingOneofCamelCaseName  Ljava/lang/String;
    Signature: (Lcom/google/protobuf/Descriptors$FieldDescriptor;Ljava/lang/String;Ljava/lang/Class<+Lcom/google/protobuf/GeneratedMessageV3;>;Ljava/lang/Class<+Lcom/google/protobuf/GeneratedMessageV3$Builder;>;Ljava/lang/String;)V
    MethodParameters:
                              Name  Flags
      descriptor                    final
      camelCaseName                 final
      messageClass                  final
      builderClass                  final
      containingOneofCamelCaseName  final

  public java.lang.Object get(com.google.protobuf.GeneratedMessageV3);
    descriptor: (Lcom/google/protobuf/GeneratedMessageV3;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor this
        start local 1 // com.google.protobuf.GeneratedMessageV3 message
         0: .line 3005
            aload 0 /* this */
            getfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.supportUnknownEnumValue:Z
            ifeq 3
         1: .line 3006
            aload 0 /* this */
            getfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.getValueMethod:Ljava/lang/reflect/Method;
            aload 1 /* message */
            iconst_0
            anewarray java.lang.Object
            invokestatic com.google.protobuf.GeneratedMessageV3.invokeOrDie:(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.lang.Integer
            invokevirtual java.lang.Integer.intValue:()I
            istore 2 /* value */
        start local 2 // int value
         2: .line 3007
            aload 0 /* this */
            getfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.enumDescriptor:Lcom/google/protobuf/Descriptors$EnumDescriptor;
            iload 2 /* value */
            invokevirtual com.google.protobuf.Descriptors$EnumDescriptor.findValueByNumberCreatingIfUnknown:(I)Lcom/google/protobuf/Descriptors$EnumValueDescriptor;
            areturn
        end local 2 // int value
         3: .line 3009
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.getValueDescriptorMethod:Ljava/lang/reflect/Method;
            aload 0 /* this */
            aload 1 /* message */
            invokespecial com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularFieldAccessor.get:(Lcom/google/protobuf/GeneratedMessageV3;)Ljava/lang/Object;
            iconst_0
            anewarray java.lang.Object
            invokestatic com.google.protobuf.GeneratedMessageV3.invokeOrDie:(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
            areturn
        end local 1 // com.google.protobuf.GeneratedMessageV3 message
        end local 0 // com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    4     0     this  Lcom/google/protobuf/GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor;
            0    4     1  message  Lcom/google/protobuf/GeneratedMessageV3;
            2    3     2    value  I
    MethodParameters:
         Name  Flags
      message  final

  public java.lang.Object get(com.google.protobuf.GeneratedMessageV3$Builder);
    descriptor: (Lcom/google/protobuf/GeneratedMessageV3$Builder;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor this
        start local 1 // com.google.protobuf.GeneratedMessageV3$Builder builder
         0: .line 3014
            aload 0 /* this */
            getfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.supportUnknownEnumValue:Z
            ifeq 3
         1: .line 3015
            aload 0 /* this */
            getfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.getValueMethodBuilder:Ljava/lang/reflect/Method;
            aload 1 /* builder */
            iconst_0
            anewarray java.lang.Object
            invokestatic com.google.protobuf.GeneratedMessageV3.invokeOrDie:(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.lang.Integer
            invokevirtual java.lang.Integer.intValue:()I
            istore 2 /* value */
        start local 2 // int value
         2: .line 3016
            aload 0 /* this */
            getfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.enumDescriptor:Lcom/google/protobuf/Descriptors$EnumDescriptor;
            iload 2 /* value */
            invokevirtual com.google.protobuf.Descriptors$EnumDescriptor.findValueByNumberCreatingIfUnknown:(I)Lcom/google/protobuf/Descriptors$EnumValueDescriptor;
            areturn
        end local 2 // int value
         3: .line 3018
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.getValueDescriptorMethod:Ljava/lang/reflect/Method;
            aload 0 /* this */
            aload 1 /* builder */
            invokespecial com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularFieldAccessor.get:(Lcom/google/protobuf/GeneratedMessageV3$Builder;)Ljava/lang/Object;
            iconst_0
            anewarray java.lang.Object
            invokestatic com.google.protobuf.GeneratedMessageV3.invokeOrDie:(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
            areturn
        end local 1 // com.google.protobuf.GeneratedMessageV3$Builder builder
        end local 0 // com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    4     0     this  Lcom/google/protobuf/GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor;
            0    4     1  builder  Lcom/google/protobuf/GeneratedMessageV3$Builder;
            2    3     2    value  I
    MethodParameters:
         Name  Flags
      builder  final

  public void set(com.google.protobuf.GeneratedMessageV3$Builder, java.lang.Object);
    descriptor: (Lcom/google/protobuf/GeneratedMessageV3$Builder;Ljava/lang/Object;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=8, locals=3, args_size=3
        start local 0 // com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor this
        start local 1 // com.google.protobuf.GeneratedMessageV3$Builder builder
        start local 2 // java.lang.Object value
         0: .line 3023
            aload 0 /* this */
            getfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.supportUnknownEnumValue:Z
            ifeq 5
         1: .line 3024
            aload 0 /* this */
            getfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.setValueMethod:Ljava/lang/reflect/Method;
            aload 1 /* builder */
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
         2: .line 3025
            aload 2 /* value */
            checkcast com.google.protobuf.Descriptors$EnumValueDescriptor
            invokevirtual com.google.protobuf.Descriptors$EnumValueDescriptor.getNumber:()I
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            aastore
         3: .line 3024
            invokestatic com.google.protobuf.GeneratedMessageV3.invokeOrDie:(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
            pop
         4: .line 3026
            return
         5: .line 3028
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 1 /* builder */
            aload 0 /* this */
            getfield com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor.valueOfMethod:Ljava/lang/reflect/Method;
            aconst_null
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
            aload 2 /* value */
            aastore
            invokestatic com.google.protobuf.GeneratedMessageV3.invokeOrDie:(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
            invokespecial com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularFieldAccessor.set:(Lcom/google/protobuf/GeneratedMessageV3$Builder;Ljava/lang/Object;)V
         6: .line 3029
            return
        end local 2 // java.lang.Object value
        end local 1 // com.google.protobuf.GeneratedMessageV3$Builder builder
        end local 0 // com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    7     0     this  Lcom/google/protobuf/GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor;
            0    7     1  builder  Lcom/google/protobuf/GeneratedMessageV3$Builder;
            0    7     2    value  Ljava/lang/Object;
    MethodParameters:
         Name  Flags
      builder  final
      value    final
}
SourceFile: "GeneratedMessageV3.java"
NestHost: com.google.protobuf.GeneratedMessageV3
InnerClasses:
  public final EnumDescriptor = com.google.protobuf.Descriptors$EnumDescriptor of com.google.protobuf.Descriptors
  public final EnumValueDescriptor = com.google.protobuf.Descriptors$EnumValueDescriptor of com.google.protobuf.Descriptors
  public final FieldDescriptor = com.google.protobuf.Descriptors$FieldDescriptor of com.google.protobuf.Descriptors
  public final FileDescriptor = com.google.protobuf.Descriptors$FileDescriptor of com.google.protobuf.Descriptors
  public abstract Builder = com.google.protobuf.GeneratedMessageV3$Builder of com.google.protobuf.GeneratedMessageV3
  public final FieldAccessorTable = com.google.protobuf.GeneratedMessageV3$FieldAccessorTable of com.google.protobuf.GeneratedMessageV3
  private final SingularEnumFieldAccessor = com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularEnumFieldAccessor of com.google.protobuf.GeneratedMessageV3$FieldAccessorTable
  private SingularFieldAccessor = com.google.protobuf.GeneratedMessageV3$FieldAccessorTable$SingularFieldAccessor of com.google.protobuf.GeneratedMessageV3$FieldAccessorTable