Plugin @Parameter alias does not work for complex parameter types

It looks like MNG-674 fixed @parameter aliasing for simple types, but not for Map.

I declare this in the plugin:

/**

• The environment variables.
  *
• @parameter alias="environment"
• @required
  */
  private Map<String, String> environmentVariables;

and this in the POM:

<environment>
<FOO>bar</FOO>
</environment>

This fails, but using a simple type works:

/**

• The environment variables.
  *
• @parameter alias="environment"
• @required
  */
  private String environmentVariables;

[...]

<environment>bar</environment>