Function svn_ra_create_callbacks 

pub unsafe extern "C" fn svn_ra_create_callbacks(
    callbacks: *mut *mut svn_ra_callbacks2_t,
    pool: *mut apr_pool_t,
) -> *mut svn_error_t

Initialize a callback structure. Set @a *callbacks to a ra callbacks object, allocated in @a pool.

Clients must use this function to allocate and initialize @c svn_ra_callbacks2_t structures.

@since New in 1.3.