private static Architecture findCurrentArchitecture() {
		String architectureNameProperty = System.getProperty("os.arch");
		for (Architecture architecture : values()) {			
			if ( architecture.supportsArchitecture(architectureNameProperty) ) {
				return architecture;
			}
		}
		return UNKNOWN;
	}
Do not access this property directly. Access using Platform class.
Ghidra/Framework/Generic/src/main/java/ghidra/framework/Architecture.java