}

        public String getBaseVersion() {
            return nullify(metadata.getVersion());
        }

        private String nullify(String str) {
            return (str == null || str.isEmpty()) ? null : str;
        }

        public Object getKey() {
            return metadata.toString();
        }

        public String getRemoteFilename() {

                    Thread owner = aggregatorLock.getOwner();
                    MojoDescriptor ownerMojo = owner != null ? mojos.get(owner) : null;
                    String str = ownerMojo != null ? " The " + ownerMojo.getId() : "An";
                    String msg = str + " aggregator mojo is already being executed "
                            + "in this parallel build, those kind of mojos require exclusive access to "