public void setDryRun(Boolean dryRun) {
        this.dryRun = dryRun;
    }
<p>
Indicates whether you want Network Firewall to just check the validity of the request, rather than run the
request.
</p>
<p>
If set to <code>TRUE</code>, Network Firewall checks whether the request can run successfully, but doesn't
actually make the requested changes. The call returns the value that the request would return if you ran it with
dry run set to <code>FALSE</code>, but doesn't make additions or changes to your resources. This option allows
you to make sure that you have the required permissions to run the request and that your request parameters are
valid.
</p>
<p>
If set to <code>FALSE</code>, Network Firewall makes the requested changes to your resources.
</p>

@param dryRun
       Indicates whether you want Network Firewall to just check the validity of the request, rather than run the
       request. </p>
       <p>
       If set to <code>TRUE</code>, Network Firewall checks whether the request can run successfully, but doesn't
       actually make the requested changes. The call returns the value that the request would return if you ran
       it with dry run set to <code>FALSE</code>, but doesn't make additions or changes to your resources. This
       option allows you to make sure that you have the required permissions to run the request and that your
       request parameters are valid.
       </p>
       <p>
       If set to <code>FALSE</code>, Network Firewall makes the requested changes to your resources.
aws-java-sdk-networkfirewall/src/main/java/com/amazonaws/services/networkfirewall/model/UpdateFirewallPolicyRequest.java