pub trait Api {
// Required methods
fn DlGetVersionString(&self) -> *const c_char;
fn DlGetLibNameAndVersionString(&self) -> *const c_char;
fn DlGetCopyrightString(&self) -> *const c_char;
fn DlGetInstallRoot(&self) -> *const c_char;
fn DlIsFreeLibrary(&self) -> c_int;
}