this is just a marker file....

 * under the License.
 */
package org.apache.maven.api;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.ThreadSafe;

/**
 * Marker interface for all services provided by the {@link Session}.
 * <p>
 * Services can be retrieved from the session using the
 * {@link Session#getService(Class)} method.
 *
 * @since 4.0.0
 * @see Session#getService(Class)

 * prior notice.
 *
 * @since 3.0
 */
public interface PluginDescriptorCache {

    /**
     * A cache key.
     */
    interface Key {
        // marker interface for cache keys
    }

    @FunctionalInterface
    interface PluginDescriptorSupplier {
        PluginDescriptor load()

 * without prior notice.
 *
 */
public interface ExtensionRealmCache {
    /**
     * A cache key.
     */
    interface Key {
        // marker interface for cache keys
    }

    /**
     * CacheRecord
     */
    class CacheRecord {

        private final ClassRealm realm;

        private final ExtensionDescriptor descriptor;

            this.realm = realm;
            this.artifacts = artifacts;
        }
    }

    /**
     * A cache key.
     */
    interface Key {
        // marker interface for cache keys
    }

    @FunctionalInterface
    interface PluginRealmSupplier {
        CacheRecord load() throws PluginResolutionException, PluginContainerException;
    }

    Key createKey(

      and issue tracking systems that are managed by, or on behalf of, the
      Licensor for the purpose of discussing and improving the Work, but
      excluding communication that is conspicuously marked or otherwise
      designated in writing by the copyright owner as "Not a Contribution."

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  <!-- proxies
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   | Unless otherwise specified (by system property or command-line switch), the first proxy
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   |-->
  <proxies>
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     | Specification for one proxy, to be used in connecting to the network.
     |
    <proxy>
      <id>optional</id>
      <active>true</active>

); public void setValue(String); public void setLine(String); public void setFile(java.io.File); public String[] getParts(); } org/codehaus/plexus/util/cli/Commandline$Marker.class package org.codehaus.plexus.util.cli; public synchronized class Commandline$Marker { private int position; private int realPos; void Commandline$Marker(Commandline, int); public int getPosition(); } org/codehaus/plexus/util/cli/Commandline.class package org.codehaus.plexus.util.cli; public synchronized class Commandline...

- how to incorporate the metadata processor to start with
- create a hook to programmatically configure the test
- create a plugin processor
- directory
- jar
- hooks for loading

- I could make an annotation that marked another class as its plugin discoverer, I could just add it to
  the component descriptor and when it's loaded we can add the discoverer, that would be simpler. I could
  also do this with the lister as well
i'l

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