@Override
	public boolean isExtensionSupported(String extProtocolName) {
		return extProtocolName == null;
	}
<code>DefaultGhidraProtocolHandler</code> provides the default protocol 
handler which corresponds to the original RMI-based Ghidra Server
and local file-based Ghidra projects.
{@literal ghidra://host/repo/... or ghidra:/path/projectName/...}
See {@link DefaultGhidraProtocolConnector} and {@link DefaultLocalGhidraProtocolConnector}
Ghidra/Framework/Project/src/main/java/ghidra/framework/protocol/ghidra/DefaultGhidraProtocolHandler.java