throws IOException {
        String includes = configProps.get(INCLUDES_PROPERTY);
        if (includes != null) {
            includes = substVars(includes, INCLUDES_PROPERTY, configProps, callback);
            StringTokenizer st = new StringTokenizer(includes, "?\",", true);
            if (st.countTokens() > 0) {
                String location;
                do {

							<includes>**/*</includes>
							<overWriteReleases>true</overWriteReleases>
							<overWriteSnapshots>true</overWriteSnapshots>
						</configuration>
					</execution>
				</executions>
			</plugin>
			<plugin>
				<artifactId>maven-surefire-plugin</artifactId>
				<configuration>
					<includes>
						<include>${test.include.path}</include>
					</includes>

        Files.writeString(mavenUserProps, "${includes} = ?\"/user/ma ven.properties\",  ?/foo/bar\n");
        Path userDirectory = fs.getPath("/user");
        Files.createDirectories(userDirectory);
        Path propsPath = userDirectory.resolve("ma ven.properties");
        Files.writeString(propsPath, "${includes} = another.properties\nfro = ${bar}z\n");

        Properties p = new Properties();

That configuration would change the syntax highlighting color theme:

<img src="/img/tutorial/extending-openapi/image04.png">

## Change Default Swagger UI Parameters

FastAPI includes some default configuration parameters appropriate for most of the use cases.

It includes these default configurations:

{* ../../fastapi/openapi/docs.py ln[8:23] hl[17:23] *}

        <configuration>
          <parameter>
            <includes>
              <include>org.apache.maven.toolchain.building</include>
              <include>org.apache.maven.toolchain.io</include>
              <include>org.apache.maven.toolchain.io.xpp3</include>
              <include>org.apache.maven.toolchain.merge</include>
            </includes>
            <excludes>

    <sourceDirectory>src</sourceDirectory>
    <testSourceDirectory>test</testSourceDirectory>
    <resources>
      <resource>
        <directory>../..</directory>
        <includes>
          <include>LICENSE</include>
        </includes>
        <targetPath>META-INF</targetPath>
      </resource>
    </resources>
    <testResources>
      <testResource>
        <directory>test</directory>
        <excludes>

    <sourceDirectory>src</sourceDirectory>
    <testSourceDirectory>test</testSourceDirectory>
    <resources>
      <resource>
        <directory>..</directory>
        <includes>
          <include>LICENSE</include>
        </includes>
        <targetPath>META-INF</targetPath>
      </resource>
    </resources>
    <testResources>
      <testResource>
        <directory>test</directory>
        <excludes>

						<execution>
							<phase>package</phase>
							<goals>
								<goal>shade</goal>
							</goals>
							<configuration>
								<artifactSet>
									<includes>
										<include>org.dbflute:dbflute-runtime</include>
									</includes>
								</artifactSet>
								<relocations>
									<relocation>
										<pattern>org.dbflute</pattern>

        <groupId>com.github.siom79.japicmp</groupId>
        <artifactId>japicmp-maven-plugin</artifactId>
        <configuration>
          <parameter>
            <includes>
              <include>org.apache.maven.toolchain.model</include>
            </includes>
            <excludes>
              <exclude>org.apache.maven.toolchain.model.PersistedToolchains#setModelEncoding(java.lang.String):METHOD_REMOVED</exclude>
            </excludes>

```

`app.add_middleware()` receives a middleware class as the first argument and any additional arguments to be passed to the middleware.

## Integrated middlewares

**FastAPI** includes several middlewares for common use cases, we'll see next how to use them.

/// note | "Technical Details"

For the next examples, you could also use `from starlette.middleware.something import SomethingMiddleware`.