public IncomingMessageEnvelope(SystemStreamPartition systemStreamPartition,String offset,Object key,Object message){
  this(systemStreamPartition,offset,key,message,0);
}

public IncomingMessageEnvelope ( SystemStreamPartition systemStreamPartition , String offset , Object key , Object message ) { this ( systemStreamPartition , offset , key , message , 0 ) ; }
constructs a new incomingmessageenvelope from specified components .
