An internal class used by [PackedDataContainer] to pack nested arrays and dictionaries.
When packing nested containers using [PackedDataContainer], they are recursively packed into [PackedDataContainerRef] (only applies to [Array] and [Dictionary]). Their data can be retrieved the same way as from [PackedDataContainer]. [codeblock] var packed = PackedDataContainer.new() packed.pack([1, 2, 3, ["abc", "def"], 4, 5, 6])

for element in packed: if element is PackedDataContainerRef: for subelement in element: print("::", subelement) else: print(element)

# Prints: # 1 # 2 # 3 # ::abc # ::def # 4 # 5 # 6 [/codeblock]
Returns the size of the packed container (see [method Array.size] and [method Dictionary.size]).