public EnvironmentTemplate withEncryptionKey(String encryptionKey) {
        setEncryptionKey(encryptionKey);
        return this;
    }
<p>
The customer provided encryption key for the environment template.
</p>

@param encryptionKey
       The customer provided encryption key for the environment template.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-proton/src/main/java/com/amazonaws/services/proton/model/EnvironmentTemplate.java