@Override
	public String getProperty(String propertyName) {
		String value = System.getProperty(propertyName);
		if (value != null) {
			return value;
		}
		return super.getProperty(propertyName);
	}
Gets the given application property.  Note that if the specified property is defined
as a system property, the system property will be given precedence and returned.

@param propertyName The property name to get.
@return The property.
Ghidra/Framework/Utility/src/main/java/ghidra/framework/ApplicationProperties.java