private Collection<? extends FunctionTag> getAllTags() {
		return provider.backgroundLoadTags();
	}
Returns an immutable tag (the first one found) from the source panel, if one exists. 

@return an immutable tag, or null if not found
@throws UsrException if there's an error retrieving tags in the source panel
Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/function/tags/FunctionTagPluginTest.java