in src/main/scala/com.gu.conf/GuardianConfigurationStrategy.scala [79:87]
def getDeveloperServiceDomainBasedProperties(confPrefix: String) = {
val serviceDomain = setup.getServiceDomain
val location = String.format("classpath:%s/%s.properties", confPrefix, serviceDomain)
log("Loading developer service domain based properties from " + location)
val properties = loader getPropertiesFrom location
new PropertiesBasedConfiguration(location, properties)
}