KtFile: Stack.kt
  PACKAGE_DIRECTIVE
    <empty list>
  IMPORT_LIST
    <empty list>
  CLASS
    PsiElement(class)('class')
    PsiWhiteSpace(' ')
    PsiElement(IDENTIFIER)('Stack')
    TYPE_PARAMETER_LIST
      PsiElement(LT)('<')
      TYPE_PARAMETER
        PsiElement(IDENTIFIER)('T')
      PsiElement(GT)('>')
    PsiWhiteSpace(' ')
    PsiElement(COLON)(':')
    PsiWhiteSpace(' ')
    SUPER_TYPE_LIST
      SUPER_TYPE_ENTRY
        TYPE_REFERENCE
          USER_TYPE
            REFERENCE_EXPRESSION
              PsiElement(IDENTIFIER)('IPushPop')
            TYPE_ARGUMENT_LIST
              PsiElement(LT)('<')
              TYPE_PROJECTION
                TYPE_REFERENCE
                  USER_TYPE
                    REFERENCE_EXPRESSION
                      PsiElement(IDENTIFIER)('T')
              PsiElement(GT)('>')
    PsiWhiteSpace(' ')
    CLASS_BODY
      PsiElement(LBRACE)('{')
      PsiWhiteSpace('\n  ')
      PROPERTY
        MODIFIER_LIST
          PsiElement(private)('private')
        PsiWhiteSpace(' ')
        PsiElement(val)('val')
        PsiWhiteSpace(' ')
        PsiElement(IDENTIFIER)('data')
        PsiWhiteSpace(' ')
        PsiElement(EQ)('=')
        PsiWhiteSpace(' ')
        CALL_EXPRESSION
          REFERENCE_EXPRESSION
            PsiElement(IDENTIFIER)('ArrayList')
          TYPE_ARGUMENT_LIST
            PsiElement(LT)('<')
            TYPE_PROJECTION
              TYPE_REFERENCE
                USER_TYPE
                  REFERENCE_EXPRESSION
                    PsiElement(IDENTIFIER)('T')
            PsiElement(GT)('>')
          VALUE_ARGUMENT_LIST
            PsiElement(LPAR)('(')
            PsiElement(RPAR)(')')
        PsiElement(SEMICOLON)(';')
      PsiWhiteSpace('\n\n  ')
      FUN
        MODIFIER_LIST
          PsiElement(override)('override')
        PsiWhiteSpace(' ')
        PsiElement(fun)('fun')
        PsiWhiteSpace(' ')
        PsiElement(IDENTIFIER)('push')
        VALUE_PARAMETER_LIST
          PsiElement(LPAR)('(')
          VALUE_PARAMETER
            PsiElement(IDENTIFIER)('item')
            PsiWhiteSpace(' ')
            PsiElement(COLON)(':')
            PsiWhiteSpace(' ')
            TYPE_REFERENCE
              USER_TYPE
                REFERENCE_EXPRESSION
                  PsiElement(IDENTIFIER)('T')
          PsiElement(RPAR)(')')
        PsiWhiteSpace(' ')
        BLOCK
          PsiElement(LBRACE)('{')
          PsiWhiteSpace('\n    ')
          DOT_QUALIFIED_EXPRESSION
            REFERENCE_EXPRESSION
              PsiElement(IDENTIFIER)('data')
            PsiElement(DOT)('.')
            CALL_EXPRESSION
              REFERENCE_EXPRESSION
                PsiElement(IDENTIFIER)('add')
              VALUE_ARGUMENT_LIST
                PsiElement(LPAR)('(')
                VALUE_ARGUMENT
                  REFERENCE_EXPRESSION
                    PsiElement(IDENTIFIER)('item')
                PsiElement(RPAR)(')')
          PsiWhiteSpace(' ')
          PsiComment(EOL_COMMENT)('// Problem: I would like to write push(...) = data.add(...), but the types do not match')
          PsiWhiteSpace('\n  ')
          PsiElement(RBRACE)('}')
      PsiWhiteSpace('\n\n  ')
      FUN
        MODIFIER_LIST
          PsiElement(override)('override')
        PsiWhiteSpace(' ')
        PsiElement(fun)('fun')
        PsiWhiteSpace(' ')
        PsiElement(IDENTIFIER)('pop')
        VALUE_PARAMETER_LIST
          PsiElement(LPAR)('(')
          PsiElement(RPAR)(')')
        PsiWhiteSpace(' ')
        PsiElement(EQ)('=')
        PsiWhiteSpace(' ')
        DOT_QUALIFIED_EXPRESSION
          REFERENCE_EXPRESSION
            PsiElement(IDENTIFIER)('data')
          PsiElement(DOT)('.')
          CALL_EXPRESSION
            REFERENCE_EXPRESSION
              PsiElement(IDENTIFIER)('removeLast')
            VALUE_ARGUMENT_LIST
              PsiElement(LPAR)('(')
              PsiElement(RPAR)(')')
      PsiWhiteSpace('\n\n  ')
      PROPERTY
        MODIFIER_LIST
          PsiElement(override)('override')
        PsiWhiteSpace(' ')
        PsiElement(val)('val')
        PsiWhiteSpace(' ')
        PsiElement(IDENTIFIER)('isEmpty')
        PsiWhiteSpace('\n    ')
        PROPERTY_ACCESSOR
          PsiElement(get)('get')
          PsiElement(LPAR)('(')
          PsiElement(RPAR)(')')
          PsiWhiteSpace(' ')
          PsiElement(EQ)('=')
          PsiWhiteSpace(' ')
          DOT_QUALIFIED_EXPRESSION
            REFERENCE_EXPRESSION
              PsiElement(IDENTIFIER)('data')
            PsiElement(DOT)('.')
            REFERENCE_EXPRESSION
              PsiElement(IDENTIFIER)('isEmpty')
      PsiWhiteSpace('\n\n')
      PsiElement(RBRACE)('}')