code: public void setFileSystemIds(java.util.Collection<String> fileSystemIds) {
          if (fileSystemIds == null) {
              this.fileSystemIds = null;
              return;
          }
  
          this.fileSystemIds = new java.util.ArrayList<String>(fileSystemIds);
      }
docs: <p>
  (Optional) IDs of the file systems whose descriptions you want to retrieve (String).
  </p>
  
  @param fileSystemIds
  (Optional) IDs of the file systems whose descriptions you want to retrieve (String).