rest file
  RestLine:LINE_TEXT
    PsiElement(LINE)('Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer rutrum ex non sapien consequat, sit amet viverra nisl semper. Duis vestibulum vestibulum lacus eget dictum.')
    PsiElement(WHITESPACE)('\n')
    PsiElement(LINE)(' ')
  RestReference:REFERENCE_NAME
    PsiElement(REFERENCE_NAME)('[#Footnote]_')
  PsiElement(WHITESPACE)('\n\n')
  PsiElement(EXPLISIT_MARKUP_START)('.. ')
  RestDirective:DIRECTIVE_BLOCK
    PsiElement(DIRECTIVE)('rubric::')
    PsiElement(LINE)(' Footnotes')
  PsiElement(WHITESPACE)('\n\n')
  PsiElement(EXPLISIT_MARKUP_START)('.. ')
  RestReferenceTarget:REFERENCE
    PsiElement(FOOTNOTE)('[#Footnote]')