string to create a GLib.Quark from
size of the private error data in bytes
function initializing fields of the private error data
function copying fields of the private error data
function freeing fields of the private error data
GLib.Quark representing the error domain
This function registers an extended GLib.Error domain.
error_type_namewill be duplicated. Otherwise does the same asg_error_domain_register_static().