Function svn_hash_write 

pub unsafe extern "C" fn svn_hash_write(
    hash: *mut apr_hash_t,
    destfile: *mut apr_file_t,
    pool: *mut apr_pool_t,
) -> *mut svn_error_t

This function behaves like svn_hash_write2(), but it only works on an apr_file_t output, and the terminator is always “END”.

@deprecated Provided for backward compatibility with the 1.0 API.