core/src/main/java/io/fabric8/maven/core/util/SpringBootUtil.java
protected static Properties getPropertiesResource(URL resource) {
        Properties answer = new Properties();
        if (resource != null) {
            try(InputStream stream = resource.openStream()) {
                answer.load(stream);
            } catch (IOException e) {
                throw new IllegalStateException("Error while reading resource from URL " + resource, e);
            }
        }
        return answer;
    }
protected static Properties getPropertiesResource(URL resource) {
        Properties answer = new Properties();
        if (resource != null) {
            try(InputStream stream = resource.openStream()) {
                answer.load(stream);
            } catch (IOException e) {
                throw new IllegalStateException("Error while reading resource from URL " + resource, e);
            }
        }
        return answer;
    }
Returns the given properties resource on the project classpath if found or an empty properties object if not