protected void pressDeleteButton() {
		DockingActionIf deleteAction = getAction(plugin, "Delete");
		performAction(deleteAction, false);
		waitForSwing();
	}
This call will:
-open the file in an editor
-update the text area and buffer fields of this test
@param file the file to open
Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/script/AbstractGhidraScriptMgrPluginTest.java