类名：AssertionGui.java  它的祖宗是JPanel

数据结构：
{
Asserion.test_strings = [message ":"
success
],
TestElement.gui_class = org.apache.jmeter.assertions.gui.AssertionGui,
TestElement.test_class = org.apache.jmeter.assertions.ResponseAssertion,
TestElement.name = 响应断言,
TestElement.enabled = true,
Assertion.test_field = Assertion.response_data,
Assertion.assume_success = false,
Assertion.test_type = 16,
Assertion.custom_message =
}

布局代码：
private void init() { // WARNING: called from ctor so must not be overridden (i.e. must be private or final)
setLayout(new BorderLayout());
Box box = Box.createVerticalBox();
setBorder(makeBorder());

    box.add(makeTitlePanel());    box.add(createScopePanel(true));    box.add(createFieldPanel());    box.add(createTypePanel());    add(box, BorderLayout.NORTH);    add(createStringPanel(), BorderLayout.CENTER);    add(createCustomAssertionMessagePanel(), BorderLayout.SOUTH);}