}
        return pomProperties;
    }

    private String replaceProps(String val) {
        if (val == null) {
            return null;
        } else {
            return IvyPatternHelper.substituteVariables(val, effectiveProperties).trim();
        }
    }

    /**
     * Checks if the given value contains variable substitutions.
     *
     * @param value value to check

            return value != null ? value : defaultValue;
        }

        private String substitute(String value) {
            return IvyPatternHelper.substituteVariables(value, properties);
        }

        private Map<String, String> getExtraAttributes(Attributes attributes, String[] ignoredAttributeNames) {
            Map<String, String> ret = new HashMap<>();