Construct an array of Controls from the given controlsConfig array of
configuration, with the given optional validator and asyncValidator.
Source
model_module.ControlArray array(List<dynamic> controlsConfig,
[ValidatorFn validator = null, AsyncValidatorFn asyncValidator = null]) {
var controls = controlsConfig.map((c) => this._createControl(c)).toList();
return new model_module.ControlArray(controls, validator, asyncValidator);
}