Improve resolving references

[koxudaxi]

Related Issues

#300

[codecov]

Codecov Report

Merging #318 (827bd0b) into master (e9b6edf) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##            master      #318    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files           11        12     +1     
  Lines         1020      1437   +417     
  Branches       201       293    +92     
==========================================
+ Hits          1020      1437   +417     

Flag	Coverage Δ
unittests	100.00% <100.00%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...tamodel_code_generator/model/pydantic/dataclass.py	100.00% <ø> (ø)
datamodel_code_generator/__main__.py	100.00% <100.00%> (ø)
datamodel_code_generator/model/base.py	100.00% <100.00%> (ø)
datamodel_code_generator/model/enum.py	100.00% <100.00%> (ø)
...amodel_code_generator/model/pydantic/base_model.py	100.00% <100.00%> (ø)
..._code_generator/model/pydantic/custom_root_type.py	100.00% <100.00%> (ø)
datamodel_code_generator/model/pydantic/imports.py	100.00% <100.00%> (ø)
datamodel_code_generator/model/pydantic/types.py	100.00% <100.00%> (ø)
datamodel_code_generator/parser/base.py	100.00% <100.00%> (ø)
datamodel_code_generator/parser/jsonschema.py	100.00% <100.00%> (ø)
... and 4 more

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