code: public void setStageKeys(java.util.Collection<String> stageKeys) {
          if (stageKeys == null) {
              this.stageKeys = null;
              return;
          }
  
          this.stageKeys = new java.util.ArrayList<String>(stageKeys);
      }
docs: <p>
  A list of <a>Stage</a> resources that are associated with the <a>ApiKey</a> resource.
  </p>
  
  @param stageKeys
  A list of <a>Stage</a> resources that are associated with the <a>ApiKey</a> resource.