private void pageDown(final FieldPanel fieldPanel) {
		runSwing(() -> fieldPanel.pageDown());
	}
Moves the code browser's display down a page, as if the user had
pressed the page down button.

@param fieldPanel The field panel display of the code browser.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/disassembler/DisassembledViewPluginTest.java