KtFile: IncompleteFunctionLiteral.kt
  PACKAGE_DIRECTIVE
    <empty list>
  IMPORT_LIST
    <empty list>
  FUN
    PsiElement(fun)('fun')
    PsiWhiteSpace(' ')
    PsiElement(IDENTIFIER)('foo')
    VALUE_PARAMETER_LIST
      PsiElement(LPAR)('(')
      PsiElement(RPAR)(')')
    PsiWhiteSpace(' ')
    BLOCK
      PsiElement(LBRACE)('{')
      PsiWhiteSpace('\n    ')
      LAMBDA_EXPRESSION
        FUNCTION_LITERAL
          PsiElement(LBRACE)('{')
          VALUE_PARAMETER_LIST
            VALUE_PARAMETER
              PsiElement(IDENTIFIER)('a')
              PsiElement(COLON)(':')
              PsiWhiteSpace(' ')
              TYPE_REFERENCE
                USER_TYPE
                  REFERENCE_EXPRESSION
                    PsiElement(IDENTIFIER)('Int')
            PsiErrorElement:Expecting '->' or ','
              <empty list>
          BLOCK
            <empty list>
          PsiElement(RBRACE)('}')
      PsiWhiteSpace('\n')
      PsiElement(RBRACE)('}')