@Override
    public Builder queryMapEncoder(final QueryMapEncoder queryMapEncoder) {
      this.queryMapEncoder =
          checkNotNull(queryMapEncoder, "Argument queryMapEncoder must be not null");
      return this;
    }
Sets query map encoder.

@param queryMapEncoder query map encoder
@return this builder
vertx/feign-vertx/src/main/java/feign/VertxFeign.java