Returns the <code>SSLSession</code> bound to the specified session id.
@param sessionId the Connection identifier
@return the <code>SSLSession</code> or null if
the specified session id does not refer to a valid SSLSession.
@throws NullPointerException if <code>sessionId</code> is null.
Returns the <code>SSLSession</code> bound to the specified session id.
@param sessionId the Connection identifier @return the <code>SSLSession</code> or null if the specified session id does not refer to a valid SSLSession.
@throws NullPointerException if <code>sessionId</code> is null.