KtFile: 3.2.kt
  PACKAGE_DIRECTIVE
    <empty list>
  IMPORT_LIST
    <empty list>
  FUN
    PsiElement(fun)('fun')
    PsiWhiteSpace(' ')
    PsiElement(IDENTIFIER)('case_1')
    VALUE_PARAMETER_LIST
      PsiElement(LPAR)('(')
      PsiElement(RPAR)(')')
    PsiWhiteSpace(' ')
    BLOCK
      PsiElement(LBRACE)('{')
      PsiWhiteSpace('\n    ')
      WHEN
        PsiElement(when)('when')
        PsiWhiteSpace(' ')
        PsiElement(LPAR)('(')
        REFERENCE_EXPRESSION
          PsiElement(IDENTIFIER)('value')
        PsiElement(RPAR)(')')
        PsiErrorElement:Expecting '{'
          <empty list>
      PsiWhiteSpace('\n    ')
      WHEN
        PsiElement(when)('when')
        PsiWhiteSpace(' ')
        PsiElement(LPAR)('(')
        PsiErrorElement:Expecting an expression
          <empty list>
        PsiElement(RPAR)(')')
        PsiErrorElement:Expecting '{'
          <empty list>
      PsiWhiteSpace('\n    ')
      WHEN
        PsiElement(when)('when')
        PsiErrorElement:Expecting '{'
          <empty list>
      PsiWhiteSpace('\n')
      PsiElement(RBRACE)('}')