int showDialog(PluginTool tool, Component parent) {
		tool.showDialog(this, parent);
		return actionID;
	}
Show the dialog; return an ID for the action that the user chose.
@param tool the tool
@param parent parent to this dialog
@return OK, APPLY_TO_ALL, or CANCEL
Ghidra/Framework/Project/src/main/java/ghidra/framework/main/datatree/VersionControlDialog.java