1. A method comprising: performing by a network controller comprising a Software-Defined Network (“SDN”) controller at least one of installing, updating, or removing from a data store associated with the network controller a data model and an associated transformation document identified by a 2-tuple, wherein the performing is accomplished using a NETCONF session; transmitting a message from a network element to the network controller, the message identifying the data store associated with network controller and the data model and the transformation document stored in the identified data store; downloading the identified data model and identified transformation document to the network element; applying the downloaded transformation document to the downloaded data model to generate a platform interface file; and programming the platform interface file at the network element; wherein the 2-tuple is defined as yin-data-model, platform-model-transform, in a data store where a yin-data-model is a YIN representation of a new YANG data model to be installed on a network element, and a platform model transform is an XSLT document that enables transformation of the YIN representation to Command Line Interface (“CLI”)/API via a transform engine.