JsonFile: MissingCommaBetweenArrayElements.json
  JsonArray
    PsiElement([)('[')
    PsiWhiteSpace('\n  ')
    JsonNumberLiteral
      PsiElement(NUMBER)('42')
    PsiErrorElement:',' or ']' expected, got 'null'
      <empty list>
    PsiWhiteSpace('\n  ')
    JsonNullLiteral
      PsiElement(null)('null')
    PsiWhiteSpace('\n')
    PsiElement(])(']')