sway: Getting 'UNRESOLVABLE_REFERENCE' Error even though the definition is present in the swagger spec

Output

{ errors:
   [ { code: 'INVALID_RESPONSE_BODY',
       errors:
        [ { code: 'UNRESOLVABLE_REFERENCE',
            params: [ '#/definitions/RouteFilter' ],
            message: 'Reference could not be resolved: #/definitions/RouteFilter',
            path: [] } ],
       message: 'Invalid body: Reference could not be resolved: #/definitions/RouteFilter',
       path: [] } ],
  warnings: [] }
###########################################################
.....Printing the important parts of operation object for reference...........
###########################################################

operation.responseObjects[0].definitionFullyResolved.schema: { '$ref': '#/definitions/RouteFilter' }

operation.definitionFullyResolved.responses['200'].schema: { '$ref': '#/definitions/RouteFilter' }

• The definition “RouteFilter” is actually present in the definitions section of the spec. It can be seen over here.
• I have debugged this to the point where helper.validateAgainstSchema(validator, schema, value) is called.
• The problem is that schema is not fully resolved by json-refs. Hence z-schema validator gives the ‘UNRESOLVABLE_REFERENCE’ error.

Can you please help me find out what is going on here?

Link to the spec is here.

Please run this script to verify the behavior.

var Sway = require('sway'),
  util = require('util');

var specUrl = 'https://gist.githubusercontent.com/amarzavery/0a27e2bb3558ed3ef81744ed9c3fa5a3/raw/786f1c4245adcfe69266b8af65d79466a141c43e/spec.json';
var options = { definition: specUrl };

Sway.create(options)
  .then(function (api) {
    let operations = api.getOperations();
    let operation = operations[1];
    if (operation.operationId === 'RouteFilters_Get') {
      let responseWrapper = {
        statusCode: '200',
        body: operation['x-ms-examples']['RouteFilterGet']['responses']['200']['body'],
        headers: {
          'content-type': 'application/json'
        }
      };
      let result = operation.validateResponse(responseWrapper);
      console.dir(result, {depth: null, colors: true});
      console.log('###########################################################');
      console.log('.....Printing the operation object for reference...........')
      console.log('###########################################################\n');
      console.log('operation.responseObjects[0].definitionFullyResolved.schema: ' + util.inspect(operation.responseObjects[0].definitionFullyResolved.schema, {depth: null}));
      console.log('\noperation.definitionFullyResolved.responses[\'200\'].schema: ' + util.inspect(operation.definitionFullyResolved.responses['200'].schema, {depth: null}));
    } else {
      console.log( operation.operationId + ' is not the operation we are looking for.');
    }
  }, function (err) {
    console.error(err.stack);
  });