@@ -0,0 +1,475 @@
+package com.quickblox.q_municate_core.core.exceptions;%0A%0A/**%0A * Created by PC on 09.06.2015.%0A */%0Apublic class QBRTCSessionIsAbsentException extends Exception %7B%0A%0A    private static final String DEFAULT_MESSAGE = %22You've try to make method call on null QBRTCSession reference%22;%0A%0A    @Override%0A    public String getMessage() %7B%0A        if (super.getMessage() == null) %7B%0A            return DEFAULT_MESSAGE;%0A        %7D else %7B%0A            return super.getMessage();%0A        %7D%0A    %7D%0A%7D%0A

Add QBRTCSessionIsAbsentException class