JsonFile: MissingCommaBetweenObjectProperties.json
  JsonObject
    PsiElement({)('{')
    PsiWhiteSpace('\n  ')
    JsonProperty
      JsonStringLiteral
        PsiElement(DOUBLE_QUOTED_STRING)('"foo"')
      PsiElement(:)(':')
      PsiWhiteSpace(' ')
      JsonNumberLiteral
        PsiElement(NUMBER)('42')
    PsiErrorElement:',' or '}' expected, got '"bar"'
      <empty list>
    PsiWhiteSpace('\n  ')
    JsonProperty
      JsonStringLiteral
        PsiElement(DOUBLE_QUOTED_STRING)('"bar"')
      PsiElement(:)(':')
      PsiWhiteSpace(' ')
      JsonNullLiteral
        PsiElement(null)('null')
    PsiWhiteSpace('\n')
    PsiElement(})('}')