function JSONRequest(settings) {
		this.settings = extend({}, settings);
		this.count = 0;
	}
This class enables you to use JSON-RPC to call backend methods.

@class tinymce.util.JSONRequest
@example
var json = new tinymce.util.JSONRequest({
    url: 'somebackend.php'
});

// Send RPC call 1
json.send({
    method: 'someMethod1',
    params: ['a', 'b'],
    success: function(result) {
        console.dir(result);
    }
});

// Send RPC call 2
json.send({
    method: 'someMethod2',
    params: ['a', 'b'],
    success: function(result) {
        console.dir(result);
    }
});