convert_id.json:
Mapping database table name . field name = field type in golang.
For model file. 
For non standart rare case or type aliases


mapping.json
Mapping Postgres types to Golang types


name_replace.json
Mapping database field name = golang field name
For model file. 
Replace standart field name to filled name
For non standart rare case.


nullable.json
List of golang field names, which need change 0 to null.
true = need change 0 to null
For non standart rare case.