How to read ‘project.properties’ from Java in Hybris using hostConfigService

This is the code snippet:

    protected String getHostProperty(String key) {
        String hostName = null;

        try {
            URI baseUri = new URI(this.getBaseUrl());
            hostName = baseUri.getHost();
        } catch (URISyntaxException e) {
            //Skip, unable to retrieve host name
        }

        return hostConfigService.getProperty(key, hostName);
    }

    getHostProperty("my.property");

And this is how we can define the property in project.properties with all environments:

my.property.local=successful_LOCAL@registration.com
my.property.dev=successful_DEV@registration.com
my.property.qa=successful_QA@registration.com