@Override
	public String getStatusMsg() {
		return errMsg;
	}
Construct a new command.
@param treeName name of the tree that this command affects
@param folderName name of the folder (module) that is being merged in
with its parent
@param parentName name of the parent that will end up with children of
the folder named folderName
Ghidra/Features/Base/src/main/java/ghidra/app/cmd/module/MergeFolderCmd.java