https://freemarker.apache.org/: FreeMarker is a "template engine"; a generic tool to generate text output based on templates. (Apache Software Foundation) 
final class freemarker.cache.TemplateNameFormat$Default020300 extends freemarker.cache.TemplateNameFormat
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: freemarker.cache.TemplateNameFormat$Default020300
  super_class: freemarker.cache.TemplateNameFormat
{
  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.cache.TemplateNameFormat$Default020300 this
         0: .line 150
            aload 0 /* this */
            invokespecial freemarker.cache.TemplateNameFormat.<init>:()V
            return
        end local 0 // freemarker.cache.TemplateNameFormat$Default020300 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/cache/TemplateNameFormat$Default020300;

  java.lang.String toRootBasedName(java.lang.String, java.lang.String);
    descriptor: (Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
    flags: (0x0000) 
    Code:
      stack=6, locals=4, args_size=3
        start local 0 // freemarker.cache.TemplateNameFormat$Default020300 this
        start local 1 // java.lang.String baseName
        start local 2 // java.lang.String targetName
         0: .line 153
            aload 2 /* targetName */
            ldc "://"
            invokevirtual java.lang.String.indexOf:(Ljava/lang/String;)I
            ifle 2
         1: .line 154
            aload 2 /* targetName */
            areturn
         2: .line 155
      StackMap locals:
      StackMap stack:
            aload 2 /* targetName */
            ldc "/"
            invokevirtual java.lang.String.startsWith:(Ljava/lang/String;)Z
            ifeq 7
         3: .line 156
            aload 1 /* baseName */
            ldc "://"
            invokevirtual java.lang.String.indexOf:(Ljava/lang/String;)I
            istore 3 /* schemeSepIdx */
        start local 3 // int schemeSepIdx
         4: .line 157
            iload 3 /* schemeSepIdx */
            ifle 6
         5: .line 158
            new java.lang.StringBuilder
            dup
            aload 1 /* baseName */
            iconst_0
            iload 3 /* schemeSepIdx */
            iconst_2
            iadd
            invokevirtual java.lang.String.substring:(II)Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 2 /* targetName */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
         6: .line 160
      StackMap locals: int
      StackMap stack:
            aload 2 /* targetName */
            iconst_1
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            areturn
        end local 3 // int schemeSepIdx
         7: .line 163
      StackMap locals:
      StackMap stack:
            aload 1 /* baseName */
            ldc "/"
            invokevirtual java.lang.String.endsWith:(Ljava/lang/String;)Z
            ifne 9
         8: .line 164
            aload 1 /* baseName */
            iconst_0
            aload 1 /* baseName */
            ldc "/"
            invokevirtual java.lang.String.lastIndexOf:(Ljava/lang/String;)I
            iconst_1
            iadd
            invokevirtual java.lang.String.substring:(II)Ljava/lang/String;
            astore 1 /* baseName */
         9: .line 166
      StackMap locals:
      StackMap stack:
            new java.lang.StringBuilder
            dup
            aload 1 /* baseName */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 2 /* targetName */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 2 // java.lang.String targetName
        end local 1 // java.lang.String baseName
        end local 0 // freemarker.cache.TemplateNameFormat$Default020300 this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0   10     0          this  Lfreemarker/cache/TemplateNameFormat$Default020300;
            0   10     1      baseName  Ljava/lang/String;
            0   10     2    targetName  Ljava/lang/String;
            4    7     3  schemeSepIdx  I
    MethodParameters:
            Name  Flags
      baseName    
      targetName  

  java.lang.String normalizeRootBasedName(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/lang/String;
    flags: (0x0000) 
    Code:
      stack=6, locals=5, args_size=2
        start local 0 // freemarker.cache.TemplateNameFormat$Default020300 this
        start local 1 // java.lang.String name
         0: .line 173
            aload 1 /* name */
            invokestatic freemarker.cache.TemplateNameFormat.checkNameHasNoNullCharacter:(Ljava/lang/String;)V
         1: .line 177
            aload 1 /* name */
            astore 2 /* path */
        start local 2 // java.lang.String path
         2: .line 180
      StackMap locals: java.lang.String
      StackMap stack:
            aload 2 /* path */
            ldc "/../"
            invokevirtual java.lang.String.indexOf:(Ljava/lang/String;)I
            istore 3 /* parentDirPathLoc */
        start local 3 // int parentDirPathLoc
         3: .line 181
            iload 3 /* parentDirPathLoc */
            ifne 5
         4: .line 184
            aload 1 /* name */
            invokestatic freemarker.cache.TemplateNameFormat.newRootLeavingException:(Ljava/lang/String;)Lfreemarker/template/MalformedTemplateNameException;
            athrow
         5: .line 186
      StackMap locals: int
      StackMap stack:
            iload 3 /* parentDirPathLoc */
            iconst_m1
            if_icmpne 8
         6: .line 187
            aload 2 /* path */
            ldc "../"
            invokevirtual java.lang.String.startsWith:(Ljava/lang/String;)Z
            ifeq 13
         7: .line 188
            aload 1 /* name */
            invokestatic freemarker.cache.TemplateNameFormat.newRootLeavingException:(Ljava/lang/String;)Lfreemarker/template/MalformedTemplateNameException;
            athrow
         8: .line 192
      StackMap locals:
      StackMap stack:
            aload 2 /* path */
            bipush 47
            iload 3 /* parentDirPathLoc */
            iconst_1
            isub
            invokevirtual java.lang.String.lastIndexOf:(II)I
            istore 4 /* previousSlashLoc */
        start local 4 // int previousSlashLoc
         9: .line 193
            new java.lang.StringBuilder
            dup
            aload 2 /* path */
            iconst_0
            iload 4 /* previousSlashLoc */
            iconst_1
            iadd
            invokevirtual java.lang.String.substring:(II)Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
        10: .line 194
            aload 2 /* path */
            iload 3 /* parentDirPathLoc */
            ldc "/../"
            invokevirtual java.lang.String.length:()I
            iadd
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
        11: .line 193
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 2 /* path */
        end local 4 // int previousSlashLoc
        end local 3 // int parentDirPathLoc
        12: .line 179
            goto 2
        13: .line 197
      StackMap locals:
      StackMap stack:
            aload 2 /* path */
            ldc "/./"
            invokevirtual java.lang.String.indexOf:(Ljava/lang/String;)I
            istore 3 /* currentDirPathLoc */
        start local 3 // int currentDirPathLoc
        14: .line 198
            iload 3 /* currentDirPathLoc */
            iconst_m1
            if_icmpne 18
        15: .line 199
            aload 2 /* path */
            ldc "./"
            invokevirtual java.lang.String.startsWith:(Ljava/lang/String;)Z
            ifeq 22
        16: .line 200
            aload 2 /* path */
            ldc "./"
            invokevirtual java.lang.String.length:()I
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            astore 2 /* path */
        17: .line 202
            goto 22
        18: .line 204
      StackMap locals: int
      StackMap stack:
            new java.lang.StringBuilder
            dup
            aload 2 /* path */
            iconst_0
            iload 3 /* currentDirPathLoc */
            invokevirtual java.lang.String.substring:(II)Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
        19: .line 205
            aload 2 /* path */
            iload 3 /* currentDirPathLoc */
            ldc "/./"
            invokevirtual java.lang.String.length:()I
            iadd
            iconst_1
            isub
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
        20: .line 204
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 2 /* path */
        end local 3 // int currentDirPathLoc
        21: .line 196
            goto 13
        22: .line 208
      StackMap locals:
      StackMap stack:
            aload 2 /* path */
            invokevirtual java.lang.String.length:()I
            iconst_1
            if_icmple 24
            aload 2 /* path */
            iconst_0
            invokevirtual java.lang.String.charAt:(I)C
            bipush 47
            if_icmpne 24
        23: .line 209
            aload 2 /* path */
            iconst_1
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            astore 2 /* path */
        24: .line 211
      StackMap locals:
      StackMap stack:
            aload 2 /* path */
            areturn
        end local 2 // java.lang.String path
        end local 1 // java.lang.String name
        end local 0 // freemarker.cache.TemplateNameFormat$Default020300 this
      LocalVariableTable:
        Start  End  Slot               Name  Signature
            0   25     0               this  Lfreemarker/cache/TemplateNameFormat$Default020300;
            0   25     1               name  Ljava/lang/String;
            2   25     2               path  Ljava/lang/String;
            3   12     3   parentDirPathLoc  I
            9   12     4   previousSlashLoc  I
           14   21     3  currentDirPathLoc  I
    Exceptions:
      throws freemarker.template.MalformedTemplateNameException
    MethodParameters:
      Name  Flags
      name  final

  java.lang.String rootBasedNameToAbsoluteName(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/lang/String;
    flags: (0x0000) 
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // freemarker.cache.TemplateNameFormat$Default020300 this
        start local 1 // java.lang.String name
         0: .line 216
            aload 1 /* name */
            ldc "://"
            invokevirtual java.lang.String.indexOf:(Ljava/lang/String;)I
            ifle 2
         1: .line 217
            aload 1 /* name */
            areturn
         2: .line 219
      StackMap locals:
      StackMap stack:
            aload 1 /* name */
            ldc "/"
            invokevirtual java.lang.String.startsWith:(Ljava/lang/String;)Z
            ifne 4
         3: .line 220
            new java.lang.StringBuilder
            dup
            ldc "/"
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 1 /* name */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
         4: .line 222
      StackMap locals:
      StackMap stack:
            aload 1 /* name */
            areturn
        end local 1 // java.lang.String name
        end local 0 // freemarker.cache.TemplateNameFormat$Default020300 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Lfreemarker/cache/TemplateNameFormat$Default020300;
            0    5     1  name  Ljava/lang/String;
    Exceptions:
      throws freemarker.template.MalformedTemplateNameException
    MethodParameters:
      Name  Flags
      name  

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.cache.TemplateNameFormat$Default020300 this
         0: .line 227
            ldc "TemplateNameFormat.DEFAULT_2_3_0"
            areturn
        end local 0 // freemarker.cache.TemplateNameFormat$Default020300 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/cache/TemplateNameFormat$Default020300;
}
SourceFile: "TemplateNameFormat.java"
NestHost: freemarker.cache.TemplateNameFormat
InnerClasses:
  private final Default020300 = freemarker.cache.TemplateNameFormat$Default020300 of freemarker.cache.TemplateNameFormat