JetFile: DocCommentOnPackageDirectiveLine.kt
  PACKAGE_DIRECTIVE
    PsiElement(package)('package')
    PsiWhiteSpace(' ')
    DOT_QUALIFIED_EXPRESSION
      REFERENCE_EXPRESSION
        PsiElement(IDENTIFIER)('p1')
      PsiElement(DOT)('.')
      REFERENCE_EXPRESSION
        PsiElement(IDENTIFIER)('p2')
    PsiElement(SEMICOLON)(';')
  IMPORT_LIST
    <empty list>
  FUN
    KDoc
      PsiElement(KDOC_START)('/**')
      KDOC_SECTION
        PsiElement(KDOC_TEXT)(' some ')
      PsiElement(KDOC_END)('*/')
    PsiWhiteSpace('\n')
    PsiElement(fun)('fun')
    PsiWhiteSpace(' ')
    PsiElement(IDENTIFIER)('foo')
    VALUE_PARAMETER_LIST
      PsiElement(LPAR)('(')
      PsiElement(RPAR)(')')
    BLOCK
      PsiElement(LBRACE)('{')
      PsiElement(RBRACE)('}')
