groupobj

```javascript

npm install groupobj
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var group = require("group"),
EventEmitter = require("events").EventEmitter;



var emGroup = group(EventEmitter);
emGroup.add(new EventEmitter());
emGroup.add(new EventEmitter(), new EventEmitter());

emGroup.on("test", function() {

});

group(emGroup.on("test", function(){})).dispose(); //wrapped method

var group = require("group");

var EmitterGroup = group.flow({
    "par each": ["on", "emit"]
}).
pre("on", function(item, next) {

}).
pos("emit", function() {

}).
create();



var eg = new EmitterGroup([new EventEmitter(), new EventEmitter()]);
eg.on("emit", function() {

});
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