this.setSince(md.getSince());
        this.setThreadSafe(true);
        this.setImplementation(md.getImplementation());
        try {
            this.setParameters(md.getParameters().stream().map(Parameter::new).collect(Collectors.toList()));
        } catch (DuplicateParameterException e) {
            throw new IllegalArgumentException(e);
        }
        this.mojoDescriptorV4 = md;

                parameter.setDefaultValue(paramConfig.getAttribute("default-value"));
            }

            parameters.add(parameter);
        }

        mojo.setParameters(parameters);

        // TODO this should not need to be handed off...

        // ----------------------------------------------------------------------
        // Requirements

        param1.setName("param1");
        param1.setDefaultValue("value1");
        mojoDescriptor.addParameter(param1);

        assertEquals(1, mojoDescriptor.getParameters().size());

        assertEquals(
                mojoDescriptor.getParameters().size(),
                mojoDescriptor.getParameterMap().size());

        Parameter param2 = new Parameter();
        param2.setName("param2");

        assertEquals("2.2", md.getSince());
        assertEquals("deprecated-mojo", md.getDeprecated());
        assertEquals(1, md.getRequirements().size());
        assertEquals(1, md.getParameters().size());

        assertNotNull(md.getMojoConfiguration());
        assertEquals(1, md.getMojoConfiguration().getChildCount());

        PlexusConfiguration pc = md.getMojoConfiguration().getChild(0);