code: function getAPIJSONPromise(oChainObject) {
  		return new Promise(function(oResolve, oReject) {
  			fs.readFile(sInputFile, 'utf8', (oError, sFileData) => {
  				if (oError) {
  					oReject(oError);
  				} else {
  					oChainObject.fileData = JSON.parse(sFileData);
  					oResolve(oChainObject);
  				}
  			});
  		});
  	}
docs: Load api.json file
  @param {object} oChainObject chain object
  @returns {object} chain object