public String getConnectionId() {
        return this.connectionId;
    }
<p>
The ID of the VpcLink used for the integration when <code>connectionType=VPC_LINK</code> and undefined,
otherwise.
</p>

@return The ID of the VpcLink used for the integration when <code>connectionType=VPC_LINK</code> and undefined,
        otherwise.
aws-java-sdk-api-gateway/src/main/java/com/amazonaws/services/apigateway/model/PutIntegrationResult.java