Sets a new value to the propertySpaceDrawer:matrix property, as a glib.variant.VariantG.
If matrix is null, then an empty array is set.
If matrix is floating, it is consumed.
The gtksource.space_drawer.SpaceDrawer.setTypesForLocations function may be more convenient to use.
the new matrix value, or null.
Sets a new value to the propertySpaceDrawer:matrix property, as a glib.variant.VariantG.
If matrix is null, then an empty array is set.
If matrix is floating, it is consumed.
The gtksource.space_drawer.SpaceDrawer.setTypesForLocations function may be more convenient to use.