public void setAuthenticationOptions(java.util.Collection<ClientVpnAuthenticationRequest> authenticationOptions) {
        if (authenticationOptions == null) {
            this.authenticationOptions = null;
            return;
        }

        this.authenticationOptions = new com.amazonaws.internal.SdkInternalList<ClientVpnAuthenticationRequest>(authenticationOptions);
    }
<p>
Information about the authentication method to be used to authenticate clients.
</p>

@param authenticationOptions
       Information about the authentication method to be used to authenticate clients.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/CreateClientVpnEndpointRequest.java