class org.apache.xerces.impl.validation.grammars.DTDGrammar (implements org.apache.xerces.xni.XMLDTDContentModelHandler, org.apache.xerces.xni.XMLDTDHandler)
class org.apache.xerces.impl.validation.grammars.SchemaGrammar
class org.apache.xerces.impl.validation.grammars.SchemaSymbols