code: public BatchGetCrawlersResult withCrawlers(Crawler... crawlers) {
          if (this.crawlers == null) {
              setCrawlers(new java.util.ArrayList<Crawler>(crawlers.length));
          }
          for (Crawler ele : crawlers) {
              this.crawlers.add(ele);
          }
          return this;
      }
docs: <p>
  A list of crawler definitions.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setCrawlers(java.util.Collection)} or {@link #withCrawlers(java.util.Collection)} if you want to override
  the existing values.
  </p>
  
  @param crawlers
  A list of crawler definitions.
  @return Returns a reference to this object so that method calls can be chained together.