assertNotNull(event.getSession());
                assertNotNull(event.getProject());
                assertNotNull(event.getExecution());
                assertNotNull(event.getMojo());
                assertNull(event.getCause());

                log.add("beforeMojoExecution " + event.getProject().getArtifactId() + ":"
                        + event.getExecution().getExecutionId());
            }

            String phase = mojoDescriptor.getExecutePhase();
            // We have a fork goal
            if (forkedGoal != null && !forkedGoal.isEmpty()) {
                MojoDescriptor forkedMojoDescriptor = pluginDescriptor.getMojo(forkedGoal);
                if (forkedMojoDescriptor == null) {
                    throw new MavenException(new MojoNotFoundException(forkedGoal, pluginDescriptor));
                }

                    InvalidPluginDescriptorException {
        PluginDescriptor pluginDescriptor = getPluginDescriptor(plugin, repositories, session);

        MojoDescriptor mojoDescriptor = pluginDescriptor.getMojo(goal);

        if (mojoDescriptor == null) {
            throw new MojoNotFoundException(goal, pluginDescriptor);
        }

        return mojoDescriptor;
    }

    @Override

        assertTrue(pd.isInheritedByDefault(), "Expected " + pd + ".isInheritedByDefault() to return true");
        assertEquals(2, pd.getMojos().size());
        assertEquals(1, pd.getDependencies().size());

        MojoDescriptor md = pd.getMojos().get(0);

        assertEquals("jar", md.getGoal());
        assertEquals("mojo-description", md.getDescription());