KtFile: modifierAtFileStart.kt
  PACKAGE_DIRECTIVE
    <empty list>
  IMPORT_LIST
    <empty list>
  CLASS
    MODIFIER_LIST
      ANNOTATION_ENTRY
        PsiElement(AT)('@')
        CONSTRUCTOR_CALLEE
          TYPE_REFERENCE
            USER_TYPE
              REFERENCE_EXPRESSION
                PsiElement(IDENTIFIER)('public')
    PsiWhiteSpace(' ')
    PsiElement(class)('class')
    PsiWhiteSpace(' ')
    PsiElement(IDENTIFIER)('A')