https://freemarker.apache.org/: FreeMarker is a "template engine"; a generic tool to generate text output based on templates. (Apache Software Foundation) 
class freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter implements freemarker.template.TemplateScalarModel, freemarker.template.TemplateHashModel, freemarker.template.TemplateMethodModel
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter
  super_class: java.lang.Object
{
  private final freemarker.template.TemplateDateModel dateModel;
    descriptor: Lfreemarker/template/TemplateDateModel;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final freemarker.core.Environment env;
    descriptor: Lfreemarker/core/Environment;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final freemarker.core.TemplateDateFormat defaultFormat;
    descriptor: Lfreemarker/core/TemplateDateFormat;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private java.lang.String cachedValue;
    descriptor: Ljava/lang/String;
    flags: (0x0002) ACC_PRIVATE

  final freemarker.core.BuiltInsForMultipleTypes$stringBI this$1;
    descriptor: Lfreemarker/core/BuiltInsForMultipleTypes$stringBI;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(freemarker.core.BuiltInsForMultipleTypes$stringBI, freemarker.template.TemplateDateModel, freemarker.core.Environment);
    descriptor: (Lfreemarker/core/BuiltInsForMultipleTypes$stringBI;Lfreemarker/template/TemplateDateModel;Lfreemarker/core/Environment;)V
    flags: (0x0000) 
    Code:
      stack=6, locals=5, args_size=4
        start local 0 // freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter this
        start local 2 // freemarker.template.TemplateDateModel dateModel
        start local 3 // freemarker.core.Environment env
         0: .line 554
            aload 0 /* this */
            aload 1
            putfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.this$1:Lfreemarker/core/BuiltInsForMultipleTypes$stringBI;
         1: .line 553
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         2: .line 555
            aload 0 /* this */
            aload 2 /* dateModel */
            putfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.dateModel:Lfreemarker/template/TemplateDateModel;
         3: .line 556
            aload 0 /* this */
            aload 3 /* env */
            putfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.env:Lfreemarker/core/Environment;
         4: .line 558
            aload 2 /* dateModel */
            invokeinterface freemarker.template.TemplateDateModel.getDateType:()I
            istore 4 /* dateType */
        start local 4 // int dateType
         5: .line 559
            aload 0 /* this */
            iload 4 /* dateType */
            ifne 7
         6: .line 560
            aconst_null
            goto 10
         7: .line 561
      StackMap locals: freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter freemarker.core.BuiltInsForMultipleTypes$stringBI freemarker.template.TemplateDateModel freemarker.core.Environment int
      StackMap stack: freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter
            aload 3 /* env */
         8: .line 562
            iload 4 /* dateType */
            aload 2 /* dateModel */
            aload 1
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI.target:Lfreemarker/core/Expression;
            invokestatic freemarker.core.EvalUtil.modelToDate:(Lfreemarker/template/TemplateDateModel;Lfreemarker/core/Expression;)Ljava/util/Date;
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            aload 1
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI.target:Lfreemarker/core/Expression;
            iconst_1
         9: .line 561
            invokevirtual freemarker.core.Environment.getTemplateDateFormat:(ILjava/lang/Class;Lfreemarker/core/Expression;Z)Lfreemarker/core/TemplateDateFormat;
        10: .line 559
      StackMap locals: freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter freemarker.core.BuiltInsForMultipleTypes$stringBI freemarker.template.TemplateDateModel freemarker.core.Environment int
      StackMap stack: freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter freemarker.core.TemplateDateFormat
            putfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.defaultFormat:Lfreemarker/core/TemplateDateFormat;
        11: .line 563
            return
        end local 4 // int dateType
        end local 3 // freemarker.core.Environment env
        end local 2 // freemarker.template.TemplateDateModel dateModel
        end local 0 // freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   12     0       this  Lfreemarker/core/BuiltInsForMultipleTypes$stringBI$DateFormatter;
            0   12     2  dateModel  Lfreemarker/template/TemplateDateModel;
            0   12     3        env  Lfreemarker/core/Environment;
            5   12     4   dateType  I
    Exceptions:
      throws freemarker.template.TemplateException
    MethodParameters:
           Name  Flags
      this$0     final
      dateModel  
      env        

  public java.lang.Object exec(java.util.List);
    descriptor: (Ljava/util/List;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter this
        start local 1 // java.util.List args
         0: .line 566
            aload 0 /* this */
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.this$1:Lfreemarker/core/BuiltInsForMultipleTypes$stringBI;
            aload 1 /* args */
            iconst_1
            invokevirtual freemarker.core.BuiltInsForMultipleTypes$stringBI.checkMethodArgCount:(Ljava/util/List;I)V
         1: .line 567
            aload 0 /* this */
            aload 1 /* args */
            iconst_0
            invokeinterface java.util.List.get:(I)Ljava/lang/Object;
            checkcast java.lang.String
            invokevirtual freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.formatWith:(Ljava/lang/String;)Lfreemarker/template/TemplateModel;
            areturn
        end local 1 // java.util.List args
        end local 0 // freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lfreemarker/core/BuiltInsForMultipleTypes$stringBI$DateFormatter;
            0    2     1  args  Ljava/util/List;
    Exceptions:
      throws freemarker.template.TemplateModelException
    MethodParameters:
      Name  Flags
      args  

  public freemarker.template.TemplateModel get(java.lang.String);
    descriptor: (Ljava/lang/String;)Lfreemarker/template/TemplateModel;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter this
        start local 1 // java.lang.String key
         0: .line 572
            aload 0 /* this */
            aload 1 /* key */
            invokevirtual freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.formatWith:(Ljava/lang/String;)Lfreemarker/template/TemplateModel;
            areturn
        end local 1 // java.lang.String key
        end local 0 // freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/BuiltInsForMultipleTypes$stringBI$DateFormatter;
            0    1     1   key  Ljava/lang/String;
    Exceptions:
      throws freemarker.template.TemplateModelException
    MethodParameters:
      Name  Flags
      key   

  private freemarker.template.TemplateModel formatWith(java.lang.String);
    descriptor: (Ljava/lang/String;)Lfreemarker/template/TemplateModel;
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=8, locals=3, args_size=2
        start local 0 // freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter this
        start local 1 // java.lang.String key
         0: .line 578
            new freemarker.template.SimpleScalar
            dup
            aload 0 /* this */
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.env:Lfreemarker/core/Environment;
            aload 0 /* this */
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.dateModel:Lfreemarker/template/TemplateDateModel;
            aload 1 /* key */
            aload 0 /* this */
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.this$1:Lfreemarker/core/BuiltInsForMultipleTypes$stringBI;
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI.target:Lfreemarker/core/Expression;
            aload 0 /* this */
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.this$1:Lfreemarker/core/BuiltInsForMultipleTypes$stringBI;
            iconst_1
            invokevirtual freemarker.core.Environment.formatDateToPlainText:(Lfreemarker/template/TemplateDateModel;Ljava/lang/String;Lfreemarker/core/Expression;Lfreemarker/core/Expression;Z)Ljava/lang/String;
            invokespecial freemarker.template.SimpleScalar.<init>:(Ljava/lang/String;)V
         1: areturn
         2: .line 579
      StackMap locals:
      StackMap stack: freemarker.template.TemplateException
            astore 2 /* e */
        start local 2 // freemarker.template.TemplateException e
         3: .line 581
            ldc "Failed to format value"
            aload 2 /* e */
            invokestatic freemarker.core._CoreAPI.ensureIsTemplateModelException:(Ljava/lang/String;Lfreemarker/template/TemplateException;)Lfreemarker/template/TemplateModelException;
            athrow
        end local 2 // freemarker.template.TemplateException e
        end local 1 // java.lang.String key
        end local 0 // freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lfreemarker/core/BuiltInsForMultipleTypes$stringBI$DateFormatter;
            0    4     1   key  Ljava/lang/String;
            3    4     2     e  Lfreemarker/template/TemplateException;
      Exception table:
        from    to  target  type
           0     1       2  Class freemarker.template.TemplateException
    Exceptions:
      throws freemarker.template.TemplateModelException
    MethodParameters:
      Name  Flags
      key   

  public java.lang.String getAsString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=1
        start local 0 // freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter this
         0: .line 587
            aload 0 /* this */
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.cachedValue:Ljava/lang/String;
            ifnonnull 11
         1: .line 588
            aload 0 /* this */
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.defaultFormat:Lfreemarker/core/TemplateDateFormat;
            ifnonnull 5
         2: .line 589
            aload 0 /* this */
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.dateModel:Lfreemarker/template/TemplateDateModel;
            invokeinterface freemarker.template.TemplateDateModel.getDateType:()I
            ifne 4
         3: .line 590
            aload 0 /* this */
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.this$1:Lfreemarker/core/BuiltInsForMultipleTypes$stringBI;
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI.target:Lfreemarker/core/Expression;
            aconst_null
            invokestatic freemarker.core._MessageUtil.newCantFormatUnknownTypeDateException:(Lfreemarker/core/Expression;Lfreemarker/core/UnknownDateTypeFormattingUnsupportedException;)Lfreemarker/core/_TemplateModelException;
            athrow
         4: .line 592
      StackMap locals:
      StackMap stack:
            new freemarker.core.BugException
            dup
            invokespecial freemarker.core.BugException.<init>:()V
            athrow
         5: .line 596
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 0 /* this */
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.defaultFormat:Lfreemarker/core/TemplateDateFormat;
            aload 0 /* this */
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.dateModel:Lfreemarker/template/TemplateDateModel;
            invokevirtual freemarker.core.TemplateDateFormat.formatToPlainText:(Lfreemarker/template/TemplateDateModel;)Ljava/lang/String;
            invokestatic freemarker.core.EvalUtil.assertFormatResultNotNull:(Ljava/lang/String;)Ljava/lang/String;
            putfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.cachedValue:Ljava/lang/String;
         6: .line 597
            goto 11
      StackMap locals:
      StackMap stack: freemarker.core.TemplateValueFormatException
         7: astore 1 /* e */
        start local 1 // freemarker.core.TemplateValueFormatException e
         8: .line 599
            aload 0 /* this */
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.defaultFormat:Lfreemarker/core/TemplateDateFormat;
            aload 0 /* this */
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.this$1:Lfreemarker/core/BuiltInsForMultipleTypes$stringBI;
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI.target:Lfreemarker/core/Expression;
            aload 1 /* e */
            iconst_1
            invokestatic freemarker.core._MessageUtil.newCantFormatDateException:(Lfreemarker/core/TemplateDateFormat;Lfreemarker/core/Expression;Lfreemarker/core/TemplateValueFormatException;Z)Lfreemarker/template/TemplateException;
            athrow
         9: .line 600
      StackMap locals: freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter freemarker.core.TemplateValueFormatException
      StackMap stack: freemarker.template.TemplateException
            astore 2 /* e2 */
        start local 2 // freemarker.template.TemplateException e2
        10: .line 602
            ldc "Failed to format date/time/datetime"
            aload 2 /* e2 */
            invokestatic freemarker.core._CoreAPI.ensureIsTemplateModelException:(Ljava/lang/String;Lfreemarker/template/TemplateException;)Lfreemarker/template/TemplateModelException;
            athrow
        end local 2 // freemarker.template.TemplateException e2
        end local 1 // freemarker.core.TemplateValueFormatException e
        11: .line 606
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter.cachedValue:Ljava/lang/String;
            areturn
        end local 0 // freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0   12     0  this  Lfreemarker/core/BuiltInsForMultipleTypes$stringBI$DateFormatter;
            8   11     1     e  Lfreemarker/core/TemplateValueFormatException;
           10   11     2    e2  Lfreemarker/template/TemplateException;
      Exception table:
        from    to  target  type
           5     6       7  Class freemarker.core.TemplateValueFormatException
           8     9       9  Class freemarker.template.TemplateException
    Exceptions:
      throws freemarker.template.TemplateModelException

  public boolean isEmpty();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter this
         0: .line 610
            iconst_0
            ireturn
        end local 0 // freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/BuiltInsForMultipleTypes$stringBI$DateFormatter;
}
SourceFile: "BuiltInsForMultipleTypes.java"
NestHost: freemarker.core.BuiltInsForMultipleTypes
InnerClasses:
  stringBI = freemarker.core.BuiltInsForMultipleTypes$stringBI of freemarker.core.BuiltInsForMultipleTypes
  private DateFormatter = freemarker.core.BuiltInsForMultipleTypes$stringBI$DateFormatter of freemarker.core.BuiltInsForMultipleTypes$stringBI