# Configuration

{% hint style="warning" %}
**This is the manual for older MicroStream versions (Version < 5.0).**

**The new documentation (Version >= 5.0) is located at:**

[https://docs.microstream.one/](https://docs.microstream.one/manual)
{% endhint %}

The layered entities code generator is an annotation processor, provided by the `base` module.

The maven configuration looks like this:

```markup
<dependencies>
	<dependency>
		<groupId>one.microstream</groupId>
		<artifactId>base</artifactId>
		<version>02.01.00-MS-GA</version>
	</dependency>
</dependencies>

<build>
	<plugins>
		<plugin>
			<groupId>org.apache.maven.plugins</groupId>
			<artifactId>maven-compiler-plugin</artifactId>
			<version>3.8.1</version>
			<configuration>
				<source>1.8</source>
				<target>1.8</target>
				<encoding>UTF-8</encoding>
				<annotationProcessors>
					<annotationProcessor>one.microstream.entity.codegen.EntityProcessor</annotationProcessor>
				</annotationProcessors>
				<compilerArgs>
					<arg>-Amicrostream.entity.hashequalator=true</arg>
					<arg>-Amicrostream.entity.appendable=true</arg>
				</compilerArgs>
			</configuration>
		</plugin>
	</plugins>
</build>

```

If you don't want the `HashEqualator` to be generated, just set the `microstream.entity.hashequalator` argument to `false`. You can leave it out otherwise, the default value is `true`.&#x20;

The same applies to the `Appendable`.