Adds a value to the currently open object member or array.
If called after json.builder.Builder.setMemberName, sets the given node
as the value of the current member in the open object; otherwise, the node
is appended to the elements of the open array.
Adds a value to the currently open object member or array.
If called after json.builder.Builder.setMemberName, sets the given node as the value of the current member in the open object; otherwise, the node is appended to the elements of the open array.
The builder will take ownership of the node.