List of the current open objects, the first is the main target of the serialization

Used only when plain_json == true to detect cycles in serialization.

Property definitions

json $ JsonSerializer :: open_objects
	# List of the current open objects, the first is the main target of the serialization
	#
	# Used only when `plain_json == true` to detect cycles in serialization.
	private var open_objects = new Array[Object]
lib/json/serialization_write.nit:62,2--65,45