jodd-props/src/main/java/jodd/props/Props.java
@SuppressWarnings("unchecked")
	public Map<String, Object> innerMap(final String prefix) {
		initialize();
		return data.extract(null, activeProfiles, null, prefix);
	}
@SuppressWarnings("unchecked")
	public Map<String, Object> innerMap(final String prefix) {
		initialize();
		return data.extract(null, activeProfiles, null, prefix);
	}
Returns inner map from the props with given prefix. Keys in returned map
will not have the prefix.