code: private String getInterpolatorValue(MavenProject project, String value) {
      RegexBasedInterpolator interpolator = new RegexBasedInterpolator();
      interpolator.addValueSource(new ObjectBasedValueSource(project));
  
      try {
        return interpolator.interpolate(value, "project");
      }
      catch (Exception e) {
        getLog().debug("Detected exception during 'getInterpolatorValue' : ", e);
        e.printStackTrace();
      }
      return value;
    }
docs: Maven versions prior to 2.0.9 don't interpolate all ${project.*} values, so we'll need to do it ourself.
  
  @param project
  @param value
  @return