Why no setProperty() method on the sap.ui.model.Context Class

With a model context object I can do the following to obtain a value from a model:

oModelContext.getProperty("name");

Is there any reason why a setProperty() method is also not provided ?

oModelContext.setProperty("name","Trevor");

It seems that the model context object has all the necessary information to support this function:

var oModel = oModelContext.getModel();

var sPath = oModelContext.getPath();

oModel.setProperty(sPath + "/name","Trevor");

Thanks,

Trevor