JetFile: single.kt
  FILE_ANNOTATION_LIST
    ANNOTATION
      PsiElement(LBRACKET)('[')
      PsiElement(file)('file')
      PsiElement(COLON)(':')
      PsiWhiteSpace(' ')
      ANNOTATION_ENTRY
        CONSTRUCTOR_CALLEE
          TYPE_REFERENCE
            USER_TYPE
              REFERENCE_EXPRESSION
                PsiElement(IDENTIFIER)('foo')
      PsiElement(RBRACKET)(']')
  PsiWhiteSpace('\n')
  PACKAGE_DIRECTIVE
    PsiElement(package)('package')
    PsiWhiteSpace(' ')
    REFERENCE_EXPRESSION
      PsiElement(IDENTIFIER)('bar')