public ExtensionsV4 withKeyUsage(KeyUsage keyUsage) {
        setKeyUsage(keyUsage);
        return this;
    }
<p>
The key usage extension defines the purpose (e.g., encipherment, signature) of the key contained in the
certificate.
</p>

@param keyUsage
       The key usage extension defines the purpose (e.g., encipherment, signature) of the key contained in the
       certificate.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-pcaconnectorad/src/main/java/com/amazonaws/services/pcaconnectorad/model/ExtensionsV4.java