Language Reference Guide : System Classes : JsonHandler Class : MaxNestingLevel Attribute
 
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MaxNestingLevel Attribute
Data Type: integer
4GL Access: RW
The MaxNestingLevel attribute defines the maximum nesting level for circular or multiple references when converting OpenROAD objects into JSON.
If set to 0 (default), the additional "$id" and "$ref" meta attributes are used in JSON instead (one object has the "$id" attribute; other referencing objects have the "$ref" attribute with the same value).
Default: 0