code: public GetRateBasedRuleManagedKeysResult withManagedKeys(String... managedKeys) {
          if (this.managedKeys == null) {
              setManagedKeys(new java.util.ArrayList<String>(managedKeys.length));
          }
          for (String ele : managedKeys) {
              this.managedKeys.add(ele);
          }
          return this;
      }
docs: <p>
  An array of IP addresses that currently are blocked by the specified <a>RateBasedRule</a>.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setManagedKeys(java.util.Collection)} or {@link #withManagedKeys(java.util.Collection)} if you want to
  override the existing values.
  </p>
  
  @param managedKeys
  An array of IP addresses that currently are blocked by the specified <a>RateBasedRule</a>.
  @return Returns a reference to this object so that method calls can be chained together.