Function gstreamer_editing_services_sys::ges_timeline_element_edit

pub unsafe extern "C" fn ges_timeline_element_edit(
    self_: *mut GESTimelineElement, 
    layers: *mut GList, 
    new_layer_priority: i64, 
    mode: GESEditMode, 
    edge: GESEdge, 
    position: u64
) -> gboolean

This is supported on crate feature v1_18 only.