plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="4.34"?>
<plugin>
    <extension point="org.eclipse.debug.core.sourceLocators">
        <sourceLocator
            id="mixinmash.sourceLocator"
            name="MixinMash Source Locator"
            class="com.wildermods.mixinmash.TestSourceLookupDirector">
        </sourceLocator>
    </extension>

    <extension point="org.eclipse.debug.core.launchConfigurationTypes">
        <launchConfigurationType
            id="mixinmash.launchconfig.decompdebug"
            name="MixinMash Launch Configuration"
            delegate="com.wildermods.mixinmash.launchconfig.DebugWithDecompilerDelegate"
            modes="debug"
            public="true">
        </launchConfigurationType>
    </extension>
    <extension
          point="org.eclipse.debug.ui.launchConfigurationTabGroups">
       <launchConfigurationTabGroup
             class="com.wildermods.mixinmash.launchconfig.ui.DecompDebugTagGroup"
             id="mixinmash.launchConfigurationTabGroup"
             type="mixinmash.launchconfig.decompdebug">
       </launchConfigurationTabGroup>
    </extension>
</plugin>