public RequestTemplate query(String name, Iterable<String> values) {
    return appendQuery(name, values, this.collectionFormat);
  }
Specify a Query String parameter, with the specified values. Values can be literals or template
expressions.

@param name of the parameter.
@param values for this parameter.
@return a RequestTemplate for chaining.
core/src/main/java/feign/RequestTemplate.java