private void testName(String categoryName) throws InvalidNameException {
		if (categoryName == null || categoryName.length() == 0) {
			throw new InvalidNameException("Name cannot be null or zero length");
		}
	}
@see ghidra.program.model.data.Category#getDataType(java.lang.String)
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/data/CategoryDB.java