public ContainerDefinition withEnvironment(KeyValuePair... environment) {
        if (this.environment == null) {
            setEnvironment(new com.amazonaws.internal.SdkInternalList<KeyValuePair>(environment.length));
        }
        for (KeyValuePair ele : environment) {
            this.environment.add(ele);
        }
        return this;
    }
<p>
The environment variables to pass to a container. This parameter maps to <code>Env</code> in the <a
href="https://docs.docker.com/engine/api/v1.35/#operation/ContainerCreate">Create a container</a> section of the
<a href="https://docs.docker.com/engine/api/v1.35/">Docker Remote API</a> and the <code>--env</code> option to <a
href="https://docs.docker.com/engine/reference/run/#security-configuration">docker run</a>.
</p>
<important>
<p>
We don't recommend that you use plaintext environment variables for sensitive information, such as credential
data.
</p>
</important>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setEnvironment(java.util.Collection)} or {@link #withEnvironment(java.util.Collection)} if you want to
override the existing values.
</p>

@param environment
       The environment variables to pass to a container. This parameter maps to <code>Env</code> in the <a
       href="https://docs.docker.com/engine/api/v1.35/#operation/ContainerCreate">Create a container</a> section
       of the <a href="https://docs.docker.com/engine/api/v1.35/">Docker Remote API</a> and the
       <code>--env</code> option to <a
       href="https://docs.docker.com/engine/reference/run/#security-configuration">docker run</a>.</p>
       <important>
       <p>
       We don't recommend that you use plaintext environment variables for sensitive information, such as
       credential data.
       </p>
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-ecs/src/main/java/com/amazonaws/services/ecs/model/ContainerDefinition.java