Function igraph_vector_list_remove_consecutive_duplicates 

pub unsafe extern "C" fn igraph_vector_list_remove_consecutive_duplicates(
    v: *mut igraph_vector_list_t,
    eq: Option<unsafe extern "C" fn(arg1: *const igraph_vector_t, arg2: *const igraph_vector_t) -> igraph_bool_t>,
)