Function jsonnet_internal_execute_import 

pub unsafe extern "C" fn jsonnet_internal_execute_import(
    cb: JsonnetImportCallback,
    ctx: *mut c_void,
    base: *const c_char,
    rel: *const c_char,
    found_here: *mut *mut c_char,
    success: *mut c_int,
) -> *mut c_char