https://spring.io/projects/spring-boot: Spring Boot Actuator (Pivotal Software, Inc.) 
public final class org.springframework.boot.actuate.endpoint.http.ApiVersion extends java.lang.Enum<org.springframework.boot.actuate.endpoint.http.ApiVersion>
  minor version: 0
  major version: 59
  flags: flags: (0x4031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER, ACC_ANNOTATION
  this_class: org.springframework.boot.actuate.endpoint.http.ApiVersion
  super_class: java.lang.Enum
{
  public static final org.springframework.boot.actuate.endpoint.http.ApiVersion V2;
    descriptor: Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
    flags: (0x4019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL, ACC_ANNOTATION

  public static final org.springframework.boot.actuate.endpoint.http.ApiVersion V3;
    descriptor: Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
    flags: (0x4019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL, ACC_ANNOTATION

  private static final java.lang.String MEDIA_TYPE_PREFIX;
    descriptor: Ljava/lang/String;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: "application/vnd.spring-boot.actuator."

  public static final org.springframework.boot.actuate.endpoint.http.ApiVersion LATEST;
    descriptor: Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  private static final org.springframework.boot.actuate.endpoint.http.ApiVersion[] ENUM$VALUES;
    descriptor: [Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
    flags: (0x101a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL, ACC_SYNTHETIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=4, locals=0, args_size=0
         0: .line 34
            new org.springframework.boot.actuate.endpoint.http.ApiVersion
            dup
            ldc "V2"
            iconst_0
            invokespecial org.springframework.boot.actuate.endpoint.http.ApiVersion.<init>:(Ljava/lang/String;I)V
         1: .line 37
            putstatic org.springframework.boot.actuate.endpoint.http.ApiVersion.V2:Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
         2: .line 39
            new org.springframework.boot.actuate.endpoint.http.ApiVersion
            dup
            ldc "V3"
            iconst_1
            invokespecial org.springframework.boot.actuate.endpoint.http.ApiVersion.<init>:(Ljava/lang/String;I)V
         3: .line 42
            putstatic org.springframework.boot.actuate.endpoint.http.ApiVersion.V3:Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
            iconst_2
            anewarray org.springframework.boot.actuate.endpoint.http.ApiVersion
            dup
            iconst_0
            getstatic org.springframework.boot.actuate.endpoint.http.ApiVersion.V2:Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
            aastore
            dup
            iconst_1
            getstatic org.springframework.boot.actuate.endpoint.http.ApiVersion.V3:Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
            aastore
            putstatic org.springframework.boot.actuate.endpoint.http.ApiVersion.ENUM$VALUES:[Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
         4: .line 49
            getstatic org.springframework.boot.actuate.endpoint.http.ApiVersion.V3:Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
            putstatic org.springframework.boot.actuate.endpoint.http.ApiVersion.LATEST:Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private void <init>(java.lang.String, int);
    descriptor: (Ljava/lang/String;I)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // org.springframework.boot.actuate.endpoint.http.ApiVersion this
         0: .line 32
            aload 0 /* this */
            aload 1
            iload 2
            invokespecial java.lang.Enum.<init>:(Ljava/lang/String;I)V
            return
        end local 0 // org.springframework.boot.actuate.endpoint.http.ApiVersion this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
    MethodParameters:
               Name  Flags
      $enum$name     
      $enum$ordinal  

  public static org.springframework.boot.actuate.endpoint.http.ApiVersion fromHttpHeaders(java.util.Map<java.lang.String, java.util.List<java.lang.String>>);
    descriptor: (Ljava/util/Map;)Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=7, args_size=1
        start local 0 // java.util.Map headers
         0: .line 58
            aconst_null
            astore 1 /* version */
        start local 1 // org.springframework.boot.actuate.endpoint.http.ApiVersion version
         1: .line 59
            aload 0 /* headers */
            ldc "Accept"
            invokeinterface java.util.Map.get:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.util.List
            astore 2 /* accepts */
        start local 2 // java.util.List accepts
         2: .line 60
            aload 2 /* accepts */
            invokestatic org.springframework.util.CollectionUtils.isEmpty:(Ljava/util/Collection;)Z
            ifne 10
         3: .line 61
            aload 2 /* accepts */
            invokeinterface java.util.List.iterator:()Ljava/util/Iterator;
            astore 4
            goto 9
      StackMap locals: java.util.Map org.springframework.boot.actuate.endpoint.http.ApiVersion java.util.List top java.util.Iterator
      StackMap stack:
         4: aload 4
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast java.lang.String
            astore 3 /* accept */
        start local 3 // java.lang.String accept
         5: .line 62
            aload 3 /* accept */
            invokestatic org.springframework.util.MimeTypeUtils.tokenize:(Ljava/lang/String;)Ljava/util/List;
            invokeinterface java.util.List.iterator:()Ljava/util/Iterator;
            astore 6
            goto 8
      StackMap locals: java.util.Map org.springframework.boot.actuate.endpoint.http.ApiVersion java.util.List java.lang.String java.util.Iterator top java.util.Iterator
      StackMap stack:
         6: aload 6
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast java.lang.String
            astore 5 /* type */
        start local 5 // java.lang.String type
         7: .line 63
            aload 1 /* version */
            aload 5 /* type */
            invokestatic org.springframework.boot.actuate.endpoint.http.ApiVersion.forType:(Ljava/lang/String;)Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
            invokestatic org.springframework.boot.actuate.endpoint.http.ApiVersion.mostRecent:(Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;)Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
            astore 1 /* version */
        end local 5 // java.lang.String type
         8: .line 62
      StackMap locals:
      StackMap stack:
            aload 6
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 6
        end local 3 // java.lang.String accept
         9: .line 61
      StackMap locals: java.util.Map org.springframework.boot.actuate.endpoint.http.ApiVersion java.util.List top java.util.Iterator
      StackMap stack:
            aload 4
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 4
        10: .line 67
      StackMap locals: java.util.Map org.springframework.boot.actuate.endpoint.http.ApiVersion java.util.List
      StackMap stack:
            aload 1 /* version */
            ifnull 11
            aload 1 /* version */
            goto 12
      StackMap locals:
      StackMap stack:
        11: getstatic org.springframework.boot.actuate.endpoint.http.ApiVersion.LATEST:Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
      StackMap locals:
      StackMap stack: org.springframework.boot.actuate.endpoint.http.ApiVersion
        12: areturn
        end local 2 // java.util.List accepts
        end local 1 // org.springframework.boot.actuate.endpoint.http.ApiVersion version
        end local 0 // java.util.Map headers
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0   13     0  headers  Ljava/util/Map<Ljava/lang/String;Ljava/util/List<Ljava/lang/String;>;>;
            1   13     1  version  Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
            2   13     2  accepts  Ljava/util/List<Ljava/lang/String;>;
            5    9     3   accept  Ljava/lang/String;
            7    8     5     type  Ljava/lang/String;
    Signature: (Ljava/util/Map<Ljava/lang/String;Ljava/util/List<Ljava/lang/String;>;>;)Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
    MethodParameters:
         Name  Flags
      headers  

  private static org.springframework.boot.actuate.endpoint.http.ApiVersion forType(java.lang.String);
    descriptor: (Ljava/lang/String;)Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=3, locals=2, args_size=1
        start local 0 // java.lang.String type
         0: .line 71
            aload 0 /* type */
            ldc "application/vnd.spring-boot.actuator."
            invokevirtual java.lang.String.startsWith:(Ljava/lang/String;)Z
            ifeq 9
         1: .line 72
            aload 0 /* type */
            ldc "application/vnd.spring-boot.actuator."
            invokevirtual java.lang.String.length:()I
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            astore 0 /* type */
         2: .line 73
            aload 0 /* type */
            bipush 43
            invokevirtual java.lang.String.indexOf:(I)I
            istore 1 /* suffixIndex */
        start local 1 // int suffixIndex
         3: .line 74
            iload 1 /* suffixIndex */
            iconst_m1
            if_icmpeq 4
            aload 0 /* type */
            iconst_0
            iload 1 /* suffixIndex */
            invokevirtual java.lang.String.substring:(II)Ljava/lang/String;
            goto 5
      StackMap locals: int
      StackMap stack:
         4: aload 0 /* type */
      StackMap locals:
      StackMap stack: java.lang.String
         5: astore 0 /* type */
         6: .line 76
            aload 0 /* type */
            invokevirtual java.lang.String.toUpperCase:()Ljava/lang/String;
            invokestatic org.springframework.boot.actuate.endpoint.http.ApiVersion.valueOf:(Ljava/lang/String;)Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
         7: areturn
         8: .line 78
      StackMap locals:
      StackMap stack: java.lang.IllegalArgumentException
            pop
        end local 1 // int suffixIndex
         9: .line 81
      StackMap locals:
      StackMap stack:
            aconst_null
            areturn
        end local 0 // java.lang.String type
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0   10     0         type  Ljava/lang/String;
            3    9     1  suffixIndex  I
      Exception table:
        from    to  target  type
           6     7       8  Class java.lang.IllegalArgumentException
    MethodParameters:
      Name  Flags
      type  

  private static org.springframework.boot.actuate.endpoint.http.ApiVersion mostRecent(org.springframework.boot.actuate.endpoint.http.ApiVersion, org.springframework.boot.actuate.endpoint.http.ApiVersion);
    descriptor: (Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;)Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=4, args_size=2
        start local 0 // org.springframework.boot.actuate.endpoint.http.ApiVersion existing
        start local 1 // org.springframework.boot.actuate.endpoint.http.ApiVersion candidate
         0: .line 85
            aload 0 /* existing */
            ifnull 1
            aload 0 /* existing */
            invokevirtual org.springframework.boot.actuate.endpoint.http.ApiVersion.ordinal:()I
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_m1
      StackMap locals:
      StackMap stack: int
         2: istore 2 /* existingOrdinal */
        start local 2 // int existingOrdinal
         3: .line 86
            aload 1 /* candidate */
            ifnull 4
            aload 1 /* candidate */
            invokevirtual org.springframework.boot.actuate.endpoint.http.ApiVersion.ordinal:()I
            goto 5
      StackMap locals: int
      StackMap stack:
         4: iconst_m1
      StackMap locals:
      StackMap stack: int
         5: istore 3 /* candidateOrdinal */
        start local 3 // int candidateOrdinal
         6: .line 87
            iload 3 /* candidateOrdinal */
            iload 2 /* existingOrdinal */
            if_icmple 7
            aload 1 /* candidate */
            goto 8
      StackMap locals: int
      StackMap stack:
         7: aload 0 /* existing */
      StackMap locals:
      StackMap stack: org.springframework.boot.actuate.endpoint.http.ApiVersion
         8: areturn
        end local 3 // int candidateOrdinal
        end local 2 // int existingOrdinal
        end local 1 // org.springframework.boot.actuate.endpoint.http.ApiVersion candidate
        end local 0 // org.springframework.boot.actuate.endpoint.http.ApiVersion existing
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    9     0          existing  Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
            0    9     1         candidate  Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
            3    9     2   existingOrdinal  I
            6    9     3  candidateOrdinal  I
    MethodParameters:
           Name  Flags
      existing   
      candidate  

  public static org.springframework.boot.actuate.endpoint.http.ApiVersion[] values();
    descriptor: ()[Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=3, args_size=0
         0: .line 1
            getstatic org.springframework.boot.actuate.endpoint.http.ApiVersion.ENUM$VALUES:[Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
            dup
            astore 0
            iconst_0
            aload 0
            arraylength
            dup
            istore 1
            anewarray org.springframework.boot.actuate.endpoint.http.ApiVersion
            dup
            astore 2
            iconst_0
            iload 1
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
            aload 2
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public static org.springframework.boot.actuate.endpoint.http.ApiVersion valueOf(java.lang.String);
    descriptor: (Ljava/lang/String;)Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
         0: .line 1
            ldc Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;
            aload 0
            invokestatic java.lang.Enum.valueOf:(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/Enum;
            checkcast org.springframework.boot.actuate.endpoint.http.ApiVersion
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    MethodParameters:
      Name  Flags
      name  
}
Signature: Ljava/lang/Enum<Lorg/springframework/boot/actuate/endpoint/http/ApiVersion;>;
SourceFile: "ApiVersion.java"