} else {
                mojo = mavenPluginManager.getConfiguredMojo(Mojo.class, session, mojoExecution);
            }

            legacySupport.setSession(session);

            // NOTE: DuplicateArtifactAttachmentException is currently unchecked, so be careful removing this try/catch!
            // This is necessary to avoid creating compatibility problems for existing plugins that use
            // MavenProjectHelper.attachArtifact(..).

     * @param artifact the artifact to add or replace.
     * @deprecated Please use {@link MavenProjectHelper}
     * @throws DuplicateArtifactAttachmentException will never happen but leave it for backward compatibility
     */
    public void addAttachedArtifact(Artifact artifact) throws DuplicateArtifactAttachmentException {
        // if already there we remove it and add again
        int index = attachedArtifacts.indexOf(artifact);