[Python] Parse JSON in scala and do get with deault value

Sample JSON read from file:

{
"category": "[{\"a\":3,\"b\":11,\"c\":86}]",
"ids": "[\"1234\", \"5678\"]",
"uid": "55555",
"flag": true
}


Current Code:

val filePath = args(0)
val jsonFileString = Source.fromFile(filePath).getLines.mkString.stripMargin
val mapper = new ObjectMapper().registerModules(DefaultScalaModule)
val jsonStringObj = mapper.readTree(jsonFileString)
val ids = jsonStringObj.get("ids").asText()


This works fine to get me the ids when the json file contains it, but I want to provide a default value in case the key "ids" is not present in the JSON file. How do I do that?

In python I could do something like json_dict.get('ids', 'default_value'). I am looking for an equivalent.

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