public default String cleanupFieldName(String name) {
		// For now, silently convert whitespace to underscores
		String fieldName = StringUtilities.whitespaceToUnderscores(name);
		if (StringUtils.isBlank(fieldName)) {
			fieldName = null;
		}
		return fieldName;
	}
Internal method for cleaning up field names. 
@param name the new field name
@return the name with bad chars removed and also set back to null in the event
the new name is the default name.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/data/InternalDataTypeComponent.java