PDFontDescriptorDictionary pdFontDesc) {
boolean fname = false, flags = false, itangle = false, cheight = false;
boolean fbbox = false, asc = false, desc = false, stemv = false;
COSDictionary fontDescDictionary = pdFontDesc.getCOSDictionary();
for (Object key : fontDescDictionary.keySet()) {
if (!(key instanceof COSName)) {
this.fontContainer.addError(new ValidationResult.ValidationError(
ValidationConstants.ERROR_SYNTAX_DICTIONARY_KEY_INVALID,
"Invalid key in The font descriptor"));