void getParameterMap() throws DuplicateParameterException {
        MojoDescriptor mojoDescriptor = new MojoDescriptor();
        Parameter param1 = new Parameter();
        param1.setName("param1");
        param1.setDefaultValue("value1");
        mojoDescriptor.addParameter(param1);

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

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

    }

    /**
     * Sets the default file type value to use when MIME type is not found.
     *
     * @param defaultValue the new default file type value
     */
    public void setDefaultValue(final String defaultValue) {
        this.defaultValue = defaultValue;
    }

    /**
     * Gets all distinct file types currently configured in the mappings.
     *

        this.setEditable(p.isEditable());
        this.setDescription(p.getDescription());
        this.setExpression(p.getExpression());
        this.setDeprecated(p.getDeprecated());
        this.setDefaultValue(p.getDefaultValue());
        this.setType(p.getType());
        this.setSince(p.getSince());
    }

    // ----------------------------------------------------------------------
    //

    public void test_setDefaultValue() {
        fileTypeHelper.setDefaultValue("unknown");
        assertEquals("unknown", fileTypeHelper.getDefaultValue());

        // Test that get() returns new default value
        assertEquals("unknown", fileTypeHelper.get("non/existent"));
    }

    @Test
    public void test_setDefaultValue_withNull() {
        fileTypeHelper.setDefaultValue(null);
        assertNull(fileTypeHelper.getDefaultValue());

            if (paramConfig != null) {
                parameter.setExpression(paramConfig.getValue(null));
                parameter.setDefaultValue(paramConfig.getAttribute("default-value"));
            }

            parameters.add(parameter);
        }

        mojo.setParameters(parameters);