assertEquals("three", map.higherKey("one"));
    assertEquals("three", map.higherKey("r"));
    assertEquals("three", map.ceilingKey("r"));
    assertEquals("one", map.ceilingKey("one"));
    assertEquals(mapEntry("three", 5), map.higherEntry("one"));
    assertEquals(mapEntry("one", 3), map.ceilingEntry("one"));
    assertEquals("one", map.lowerKey("three"));

        assertThat(map.containsKey("onex"), is(not(true)));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testGet() throws Exception {
        assertThat(map.get("ONE"), is("1"));
        assertThat(map.get("One"), is("1"));
        assertThat(map.get("hoge"), is(nullValue()));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testPut() throws Exception {

import static org.apache.maven.api.ExtensibleEnums.projectScope;

/**
 * Project scope.
 * Defines the type of source files to compile, usually either the one that compose the output package
 * (i.e. the <i>main</i> artifact) or the ones that will be used when building <i>tests</i>).
 * <p>
 * This extensible enum has two defined values, {@link #MAIN} and {@link #TEST},

There are some extra features to handle security apart from the ones covered in the [Tutorial - User Guide: Security](../../tutorial/security/index.md){.internal-link target=_blank}.

/// tip

The next sections are **not necessarily "advanced"**.

And it's possible that for your use case, the solution is in one of them.

///

## Read the Tutorial first { #read-the-tutorial-first }

#### Operation { #operation }

"Operation" here refers to one of the HTTP "methods".

One of:

* `POST`
* `GET`
* `PUT`
* `DELETE`

...and the more exotic ones:

* `OPTIONS`
* `HEAD`
* `PATCH`
* `TRACE`

In the HTTP protocol, you can communicate to each path using one (or more) of these "methods".

---

/**
 * Service provider interface for registering custom {@link Packaging} implementations.
 * <p>
 * This interface allows plugins and extensions to define and register additional packaging types
 * beyond the standard ones provided by Maven (like jar, war, ear, etc.). Implementations of this
 * interface will be discovered through the Java ServiceLoader mechanism and their provided
 * packaging types will be available throughout the Maven build process.

          <association>
            <type>String</type>
            <multiplicity>*</multiplicity>
          </association>
          <description><![CDATA[Artifacts in the format <code>groupId:artifactId</code>. All the ones listed here are filtered (i.e. removed) from plugin and build extension class realms,
          i.e. referencing any of those coordinates in plugin/build extension dependencies has no effect.]]>
          </description>

/**
 * Service provider interface for registering custom {@link Lifecycle} implementations.
 * <p>
 * This interface allows plugins and extensions to define and register additional build lifecycles
 * beyond the standard ones provided by Maven (like clean, default, site). Lifecycles define a sequence
 * of phases that can be executed during a build.
 * <p>
 * Implementations of this interface will be discovered through the Java ServiceLoader mechanism

/**
 * Service provider interface for registering custom {@link PathScope} implementations.
 * <p>
 * This interface allows plugins and extensions to define and register additional path scopes
 * beyond the standard ones provided by Maven. Path scopes define how dependencies are used
 * in different contexts, such as compilation, testing, or runtime.
 * <p>

/**
 * Service provider interface for registering custom {@link Type} implementations.
 * <p>
 * This interface allows plugins and extensions to define and register additional artifact types
 * beyond the standard ones provided by Maven (like jar, war, pom, etc.). Types define how artifacts
 * are handled, including their default extension, classifier, and language.
 * <p>