@deftypefun {int} {gnutls_buffer_append_data} (gnutls_buffer_t @var{dest}, const void * @var{data}, size_t @var{data_size})
@var{dest}: the buffer to append to

@var{data}: the data

@var{data_size}: the size of  @code{data} 

Appends the provided  @code{data} to the destination buffer.

@strong{Returns:} @code{GNUTLS_E_SUCCESS}  on success, otherwise a negative error code.

@strong{Since:} 3.4.0
@end deftypefun