code: function getArgs (uriMappers, location) {
    var args = null;
  
    uriMappers.some(mapper => {
      if (mapper.expression.test(location.path)) {
        args = mapper.argsMap(location) || Object.create(null);
        return true;
      }
      return false;
    });
  
    return args;
  }
docs: Gets args
  @param {Array} uriMappers
  @param {URI} location
  @returns {Object|null}