Since 5.2, you must consider this struct as opaque. Any access to its internal must use public API. Don't try to use #gda_set_node_free on a struct that was created manually.
a #GdaHolder. It can't be NULL
a #gint with the number of column in @source_model
a #GdaDataModel. It could be NULL
Since 5.2, you must consider this struct as opaque. Any access to its internal must use public API. Don't try to use #gda_set_node_free on a struct that was created manually.