public void setEnvironmentAccountId(String environmentAccountId) {
        this.environmentAccountId = environmentAccountId;
    }
<p>
The environment account that's connected to the environment account connection.
</p>

@param environmentAccountId
       The environment account that's connected to the environment account connection.
aws-java-sdk-proton/src/main/java/com/amazonaws/services/proton/model/EnvironmentAccountConnection.java