fix nested case

[B-Five]

修复 #89

[codecov]

Codecov Report

Merging #90 (a84d6fa) into release/1.6.0 (041b2ee) will increase coverage by 0.28%.
The diff coverage is 62.16%.

@@                 Coverage Diff                 @@
##             release/1.6.0      #90      +/-   ##
===================================================
+ Coverage            65.89%   66.18%   +0.28%     
  Complexity              55       55              
===================================================
  Files                  114      114              
  Lines                 2346     2363      +17     
  Branches               162      165       +3     
===================================================
+ Hits                  1546     1564      +18     
+ Misses                 722      720       -2     
- Partials                78       79       +1     

Impacted Files	Coverage Δ	Complexity Δ
...ub/yituhealthcare/arc/graphql/GraphQLProvider.java	44.11% <48.00%> (+35.02%)	0.00 <0.00> (ø)
...are/arc/dgraph/repository/parser/DgraphParser.java	53.15% <50.00%> (ø)	0.00 <0.00> (ø)
...are/arc/dgraph/util/JSONFieldDeserializerUtil.java	79.54% <100.00%> (+2.62%)	0.00 <0.00> (ø)
...althcare/arc/graphql/GraphqlAutoConfiguration.java	100.00% <100.00%> (ø)	0.00 <0.00> (ø)

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