code: function mandatoryCheck (params = {}) {
          assert.ok(params.host !== void 0, 'no host given');
          assert.ok(params.path !== void 0, 'no path given');
          assert.ok(params.wsdl !== void 0, 'no wsdl given');
      }
docs: check given params object
  @param  {[type]} params [description]
  @return {[type]}        [description]