YAML file: a.yml
  YAML document
    YAML sequence
      YAML sequence item
        PsiElement(-)('-')
        PsiWhiteSpace(' ')
        YAML array
          PsiElement([)('[')
          YAML sequence item
            YAML plain scalar text
              PsiElement(text)('name')
          PsiWhiteSpace('        ')
          PsiElement(,)(',')
          PsiWhiteSpace(' ')
          YAML sequence item
            YAML plain scalar text
              PsiElement(text)('hr')
          PsiElement(,)(',')
          PsiWhiteSpace(' ')
          YAML sequence item
            YAML plain scalar text
              PsiElement(text)('avg')
          PsiWhiteSpace('  ')
          PsiElement(])(']')
      PsiElement(Eol)('\n')
      YAML sequence item
        PsiElement(-)('-')
        PsiWhiteSpace(' ')
        YAML array
          PsiElement([)('[')
          YAML sequence item
            YAML plain scalar text
              PsiElement(text)('Mark McGwire')
          PsiElement(,)(',')
          PsiWhiteSpace(' ')
          YAML sequence item
            YAML plain scalar text
              PsiElement(text)('65')
          PsiElement(,)(',')
          PsiWhiteSpace(' ')
          YAML sequence item
            YAML plain scalar text
              PsiElement(text)('0.278')
          PsiElement(])(']')
      PsiElement(Eol)('\n')
      YAML sequence item
        PsiElement(-)('-')
        PsiWhiteSpace(' ')
        YAML array
          PsiElement([)('[')
          YAML sequence item
            YAML plain scalar text
              PsiElement(text)('Sammy Sosa')
          PsiWhiteSpace('  ')
          PsiElement(,)(',')
          PsiWhiteSpace(' ')
          YAML sequence item
            YAML plain scalar text
              PsiElement(text)('63')
          PsiElement(,)(',')
          PsiWhiteSpace(' ')
          YAML sequence item
            YAML plain scalar text
              PsiElement(text)('0.288')
          PsiElement(])(']')