| Function silc_buffer_put_tail
 
 SYNOPSIS
 
    static inline
    unsigned char *silc_buffer_put_tail(SilcBuffer sb,
                                          const unsigned char *data,
                                          SilcUInt32 len);
DESCRIPTION
    Puts data at the tail of the buffer. Returns pointer to the copied
    data area.  Returns NULL on error.
EXAMPLE
    ---------------------------------
    | head  | data           | tail |
    ---------------------------------
                             ^
                               Puts data to the tail section.
    silc_buffer_put_tail(sb, data, data_len);
 
 
 
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