function getNodeNameAndIndex(inputName, context) {
	  var _parseNodeName2 = parseNodeName(inputName),
	      nodeName = _parseNodeName2[0],
	      index = _parseNodeName2[1];

	  return [getNodeNameWithContextId(nodeName, context && context.currentContextId), index];
	}
Returns the node name and index from the Node input name.
@param inputName The input name of the node, in format of
node_name:output_index, i.e. MatMul:0, if the output_index is not set, it is
default to 0.