Initializing generated properties with default empty arrays instead of null

Description

We are moving to swagger codegen from the Jsonschema2pojo plugin, for generating the pojos from json schema. However swagger is defaulting all properties to null, which wasnt the case with the other plugin. It was helping us in a way to not have null checks in the functional implementation, but now moving to swagger is creating problem with this behavior and forcing us to introduce null checks all across leads to bigger change.

I have tried modifying the schema like below by introducing the default, still it did not help.
"Limits": {
"type": "array",
"default" : [],
"items": {
"$ref": "#/definitions/Limit"
}
},

Swagger-codegen version - 2.3.1

Swagger declaration file content or url

Command line used for generation

Steps to reproduce

Related issues/PRs

Suggest a fix/enhancement

The report identifies swagger-codegen 2.3.1 and an array property named Limits, but provides no declaration, command, target language, generated file, or test. First supply a minimal reproducible schema and generation setup, then trace the generated property initialization and define the expected empty-array behavior.