https://projects.eclipse.org/projects/ee4j.grizzly/grizzly-websockets-server: Grizzly Bill of Materials (BOM) (Oracle Corporation) 
class org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField extends org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$Field
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField
  super_class: org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$Field
{
  private final long scale;
    descriptor: J
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  void <init>(java.lang.String, java.lang.String, int);
    descriptor: (Ljava/lang/String;Ljava/lang/String;I)V
    flags: (0x0000) 
    Code:
      stack=5, locals=5, args_size=4
        start local 0 // org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField this
        start local 1 // java.lang.String unit
        start local 2 // java.lang.String format
        start local 3 // int position
         0: .line 945
            aload 0 /* this */
            invokespecial org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$Field.<init>:()V
         1: .line 947
            aload 1 /* unit */
            ifnonnull 4
         2: .line 948
            aload 0 /* this */
            ldc 1000000000
            putfield org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField.scale:J
         3: .line 949
            return
         4: .line 952
      StackMap locals: org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField java.lang.String java.lang.String int
      StackMap stack:
            aload 1 /* unit */
            invokevirtual java.lang.String.trim:()Ljava/lang/String;
            invokevirtual java.lang.String.toLowerCase:()Ljava/lang/String;
            astore 4 /* s */
        start local 4 // java.lang.String s
         5: .line 953
            aload 4 /* s */
            ldc "n"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 7
            aload 4 /* s */
            ldc "nano"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 7
            aload 4 /* s */
            ldc "nanos"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 7
            aload 4 /* s */
            ldc "nanosec"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 7
            aload 4 /* s */
            ldc "nanosecs"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 7
            aload 4 /* s */
            ldc "nanosecond"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 7
         6: .line 954
            aload 4 /* s */
            ldc "nanoseconds"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifeq 9
         7: .line 955
      StackMap locals: java.lang.String
      StackMap stack:
            aload 0 /* this */
            lconst_1
            putfield org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField.scale:J
         8: .line 956
            goto 21
      StackMap locals:
      StackMap stack:
         9: aload 4 /* s */
            ldc "micro"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 11
            aload 4 /* s */
            ldc "micros"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 11
            aload 4 /* s */
            ldc "microsec"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 11
            aload 4 /* s */
            ldc "microsecs"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 11
            aload 4 /* s */
            ldc "microsecond"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 11
        10: .line 957
            aload 4 /* s */
            ldc "microseconds"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifeq 13
        11: .line 958
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            ldc 1000
            putfield org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField.scale:J
        12: .line 959
            goto 21
      StackMap locals:
      StackMap stack:
        13: aload 4 /* s */
            ldc "m"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 15
            aload 4 /* s */
            ldc "milli"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 15
            aload 4 /* s */
            ldc "millis"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 15
            aload 4 /* s */
            ldc "millisec"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 15
            aload 4 /* s */
            ldc "millisecs"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 15
            aload 4 /* s */
            ldc "millisecond"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 15
        14: .line 960
            aload 4 /* s */
            ldc "milliseconds"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifeq 17
        15: .line 961
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            ldc 1000000
            putfield org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField.scale:J
        16: .line 962
            goto 21
      StackMap locals:
      StackMap stack:
        17: aload 4 /* s */
            ldc "s"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 18
            aload 4 /* s */
            ldc "sec"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 18
            aload 4 /* s */
            ldc "secs"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 18
            aload 4 /* s */
            ldc "second"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 18
            aload 4 /* s */
            ldc "seconds"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifeq 20
        18: .line 963
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            ldc 1000000000
            putfield org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField.scale:J
        19: .line 964
            goto 21
        20: .line 965
      StackMap locals:
      StackMap stack:
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            ldc "Unsupported time unit \""
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 1 /* unit */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc "\" for field 'T' in ["
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 2 /* format */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc "] at character "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            iload 3 /* position */
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        21: .line 967
      StackMap locals:
      StackMap stack:
            return
        end local 4 // java.lang.String s
        end local 3 // int position
        end local 2 // java.lang.String format
        end local 1 // java.lang.String unit
        end local 0 // org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   22     0      this  Lorg/glassfish/grizzly/http/server/accesslog/ApacheLogFormat$ResponseTimeField;
            0   22     1      unit  Ljava/lang/String;
            0   22     2    format  Ljava/lang/String;
            0   22     3  position  I
            5   22     4         s  Ljava/lang/String;
    MethodParameters:
          Name  Flags
      unit      
      format    
      position  

  java.lang.StringBuilder format(java.lang.StringBuilder, org.glassfish.grizzly.http.server.Request, org.glassfish.grizzly.http.server.Response, java.util.Date, long);
    descriptor: (Ljava/lang/StringBuilder;Lorg/glassfish/grizzly/http/server/Request;Lorg/glassfish/grizzly/http/server/Response;Ljava/util/Date;J)Ljava/lang/StringBuilder;
    flags: (0x0000) 
    Code:
      stack=5, locals=7, args_size=6
        start local 0 // org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField this
        start local 1 // java.lang.StringBuilder builder
        start local 2 // org.glassfish.grizzly.http.server.Request request
        start local 3 // org.glassfish.grizzly.http.server.Response response
        start local 4 // java.util.Date timeStamp
        start local 5 // long responseNanos
         0: .line 971
            lload 5 /* responseNanos */
            lconst_0
            lcmp
            ifge 2
         1: .line 972
            aload 1 /* builder */
            bipush 45
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            areturn
         2: .line 974
      StackMap locals:
      StackMap stack:
            aload 1 /* builder */
            lload 5 /* responseNanos */
            aload 0 /* this */
            getfield org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField.scale:J
            ldiv
            invokevirtual java.lang.StringBuilder.append:(J)Ljava/lang/StringBuilder;
            areturn
        end local 5 // long responseNanos
        end local 4 // java.util.Date timeStamp
        end local 3 // org.glassfish.grizzly.http.server.Response response
        end local 2 // org.glassfish.grizzly.http.server.Request request
        end local 1 // java.lang.StringBuilder builder
        end local 0 // org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    3     0           this  Lorg/glassfish/grizzly/http/server/accesslog/ApacheLogFormat$ResponseTimeField;
            0    3     1        builder  Ljava/lang/StringBuilder;
            0    3     2        request  Lorg/glassfish/grizzly/http/server/Request;
            0    3     3       response  Lorg/glassfish/grizzly/http/server/Response;
            0    3     4      timeStamp  Ljava/util/Date;
            0    3     5  responseNanos  J
    MethodParameters:
               Name  Flags
      builder        
      request        
      response       
      timeStamp      
      responseNanos  

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=1
        start local 0 // org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField this
         0: .line 979
            new java.lang.StringBuilder
            dup
            invokespecial java.lang.StringBuilder.<init>:()V
            bipush 37
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            astore 1 /* string */
        start local 1 // java.lang.StringBuilder string
         1: .line 980
            aload 0 /* this */
            getfield org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField.scale:J
            lconst_1
            lcmp
            ifne 4
         2: .line 981
            aload 1 /* string */
            ldc "{n}T"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         3: .line 982
            goto 14
      StackMap locals: java.lang.StringBuilder
      StackMap stack:
         4: aload 0 /* this */
            getfield org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField.scale:J
            ldc 1000
            lcmp
            ifne 7
         5: .line 983
            aload 1 /* string */
            bipush 68
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
         6: .line 984
            goto 14
      StackMap locals:
      StackMap stack:
         7: aload 0 /* this */
            getfield org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField.scale:J
            ldc 1000000
            lcmp
            ifne 10
         8: .line 985
            aload 1 /* string */
            ldc "{m}T"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         9: .line 986
            goto 14
      StackMap locals:
      StackMap stack:
        10: aload 0 /* this */
            getfield org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField.scale:J
            ldc 1000000000
            lcmp
            ifne 13
        11: .line 987
            aload 1 /* string */
            bipush 84
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
        12: .line 988
            goto 14
        13: .line 989
      StackMap locals:
      StackMap stack:
            aload 1 /* string */
            bipush 123
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            aload 0 /* this */
            getfield org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField.scale:J
            invokevirtual java.lang.StringBuilder.append:(J)Ljava/lang/StringBuilder;
            ldc "}T"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
        14: .line 991
      StackMap locals:
      StackMap stack:
            aload 1 /* string */
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 1 // java.lang.StringBuilder string
        end local 0 // org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0   15     0    this  Lorg/glassfish/grizzly/http/server/accesslog/ApacheLogFormat$ResponseTimeField;
            1   15     1  string  Ljava/lang/StringBuilder;
}
SourceFile: "ApacheLogFormat.java"
NestHost: org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat
InnerClasses:
  private abstract Field = org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$Field of org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat
  private ResponseTimeField = org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat$ResponseTimeField of org.glassfish.grizzly.http.server.accesslog.ApacheLogFormat