@interface IPTypeIdentifierRegistry : NSObject + (unsigned short)contentMessageIdentifierForItemIdentifier:(unsigned short)a0 error:(id *)a1; + (id)descriptionForTypeIdentifier:(unsigned short)a0; + (BOOL)isValidFieldIdentifier:(unsigned short)a0; + (BOOL)isValidItemIdentifier:(unsigned short)a0; + (BOOL)isValidMessageIdentifier:(unsigned short)a0; + (unsigned short)itemIdentifierForFieldIdentifier:(unsigned short)a0 error:(id *)a1; + (Class)itemMessageSubclassForFieldIdentifier:(unsigned short)a0; + (Class)itemMessageSubclassForIdentifier:(unsigned short)a0; + (Class)itemMessageSubclassForItemIdentifier:(unsigned short)a0; + (Class)itemMessageSubclassForMessageIdentifier:(unsigned short)a0; + (unsigned short)messageIdentifierForFieldIdentifier:(unsigned short)a0 error:(id *)a1; + (unsigned short)metaContentMessageIdentifierForItemIdentifier:(unsigned short)a0 error:(id *)a1; @end