private void assertNoArrays(DataTypeManager dtm) {
		Map<String, DataTypeNode> nodesByName = getNodes(dtm);
		Collection<DataTypeNode> values = nodesByName.values();
		for (DataTypeNode node : values) {
			DataType dt = node.getDataType();
			assertTrue("Found an array in '%s'".formatted(dtm.getName()),
				!(dt instanceof Array));
		}
	}
Tests for managing categories through the data manager plugin and tests for
actions being enabled when a node is selected.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/datamgr/DataTypeManagerPluginTest.java