docs: public final void typeArgument() throws RecognitionException {
  		int typeArgument_StartIndex = input.index();
  
  		try {
  			if ( state.backtracking>0 && alreadyParsedRule(input, 54) ) { return; }
  
  			// src/main/resources/org/drools/compiler/semantics/java/parser/Java.g:557:5: ( type | '?' ( ( 'extends' | 'super' ) type )? )
  			int alt76=2;
  			int LA76_0 = input.LA(1);
  			if ( (LA76_0==Identifier||LA76_0==65||LA76_0==67||LA76_0==71||LA76_0==77||LA76_0==85||LA76_0==92||LA76_0==94||LA76_0==105) ) {
  				alt76=1;
  			}
  			else if ( (LA76_0==57) ) {
  				alt76=2;
  			}
  
  			else {
  				if (state.backtracking>0) {state.failed=true; return;}
  				NoViableAltException nvae =
  					new NoViableAltException("", 76, 0, input);
  				throw nvae;
  			}
  
  			switch (alt76) {
  				case 1 :
  					// src/main/resources/org/drools/compiler/semantics/java/parser/Java.g:557:7: type
  					{
  					pushFollow(FOLLOW_type_in_typeArgument1963);
  					type();
  					state._fsp--;
  					if (state.failed) return;
  					}
  					break;
  				case 2 :
  					// src/main/resources/org/drools/compiler/semantics/java/parser/Java.g:558:7: '?' ( ( 'extends' | 'super' ) type )?
  					{
  					match(input,57,FOLLOW_57_in_typeArgument1971); if (state.failed) return;
  					// src/main/resources/org/drools/compiler/semantics/java/parser/Java.g:558:11: ( ( 'extends' | 'super' ) type )?
  					int alt75=2;
  					int LA75_0 = input.LA(1);
  					if ( (LA75_0==81||LA75_0==108) ) {
  						alt75=1;
  					}
  					switch (alt75) {
  						case 1 :
  							// src/main/resources/org/drools/compiler/semantics/java/parser/Java.g:558:12: ( 'extends' | 'super' ) type
  							{
  							if ( input.LA(1)==81||input.LA(1)==108 ) {
  								input.consume();
  								state.errorRecovery=false;
  								state.failed=false;
  							}
  							else {
  								if (state.backtracking>0) {state.failed=true; return;}
  								MismatchedSetException mse = new MismatchedSetException(null,input);
  								throw mse;
  							}
  							pushFollow(FOLLOW_type_in_typeArgument1982);
  							type();
  							state._fsp--;
  							if (state.failed) return;
  							}
  							break;
  
  					}
  
  					}
  					break;
  
  			}
  		}
  		catch (RecognitionException re) {
  			reportError(re);
  			recover(input,re);
  		}
  		finally {
  			// do for sure before leaving
  			if ( state.backtracking>0 ) { memoize(input, 54, typeArgument_StartIndex); }
  
  		}
  	}