{
        Contributor target = new Contributor();
        target.setRoles( Arrays.asList( "first", "second", "third" ) );
        Contributor source = new Contributor();
        source.setRoles( Arrays.asList( "first", "second", "third" ) );

        modelMerger.mergeContributor_Roles( target, source, true, null );

        assertThat( target.getRoles(), contains( "first", "second", "third" ) );
    }

    @Test

    }

    /**
     * getter
     */
    public MetadataGraphNode getEntry() {
        return entry;
    }

    /**
     * getter
     */
    public Collection<MetadataGraphNode> getNodes() {
        return nodes;
    }

        this.role = role;
        this.roleHint = null;
    }

    public Requirement(String role, String roleHint) {
        this.role = role;
        this.roleHint = roleHint;
    }

    public String getRole() {
        return role;
    }

    public String getRoleHint() {
        return roleHint;
    }

    /**
     * Creates a shallow copy of this requirement.
     */
    @Override

        assertEquals("3.0.0", mp.getSince());

        ComponentRequirement cr = md.getRequirements().get(0);

        assertEquals("org.codehaus.plexus.archiver.Archiver", cr.getRole());
        assertEquals("jar", cr.getRoleHint());
        assertEquals("jarArchiver", cr.getFieldName());

        ComponentDependency cd = pd.getDependencies().get(0);

     */
    public void setMojoConfiguration(PlexusConfiguration mojoConfiguration) {
        this.mojoConfiguration = mojoConfiguration;
    }

    /** {@inheritDoc} */
    public String getRole() {
        return isV4Api() ? "org.apache.maven.api.plugin.Mojo" : Mojo.ROLE;
    }

    /** {@inheritDoc} */
    public String getRoleHint() {
        return getId();
    }

    /**