YAML file: a.yml
  YAML document
    YAML mapping
      YAML key value
        PsiElement(scalar key)('runningTime')
        PsiElement(:)(':')
        PsiWhiteSpace(' ')
        YAML plain scalar text
          PsiElement(text)('150000')
      PsiElement(Eol)('\n')
      YAML key value
        PsiElement(scalar key)('scenarios')
        PsiElement(:)(':')
        PsiElement(Eol)('\n')
        PsiElement(indent)('    ')
        YAML mapping
          YAML key value
            PsiElement(scalar key)('voice_bundle_change')
            PsiElement(:)(':')
            PsiWhiteSpace(' ')
            YAML hash
              PsiElement({)('{')
              PsiElement(Eol)('\n')
              PsiElement(indent)('        ')
              YAML key value
                PsiElement(scalar key)('dataCycling')
                PsiElement(:)(':')
                PsiWhiteSpace(' ')
                YAML plain scalar text
                  PsiElement(text)('true')
                PsiElement(Eol)('\n')
                PsiElement(indent)('    ')
              PsiElement(})('}')
          PsiElement(Eol)('\n')
          PsiElement(indent)('    ')
          YAML key value
            PsiElement(scalar key)('smart_overview')
            PsiElement(:)(':')
            PsiWhiteSpace(' ')
            YAML hash
              PsiElement({)('{')
              PsiElement(Eol)('\n')
              PsiElement(indent)('        ')
              YAML key value
                PsiElement(scalar key)('dataCycling')
                PsiElement(:)(':')
                PsiWhiteSpace(' ')
                YAML plain scalar text
                  PsiElement(text)('true')
                PsiElement(Eol)('\n')
                PsiElement(indent)('    ')
              PsiElement(})('}')