docs: public final void arguments() throws RecognitionException {
  		Token LEFT_PAREN27=null;
  		Token RIGHT_PAREN28=null;
  
  		try {
  			// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:673:5: ( LEFT_PAREN ( expressionList )? RIGHT_PAREN )
  			// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:673:7: LEFT_PAREN ( expressionList )? RIGHT_PAREN
  			{
  			LEFT_PAREN27=(Token)match(input,LEFT_PAREN,FOLLOW_LEFT_PAREN_in_arguments4069); if (state.failed) return;
  			if ( state.backtracking==0 ) { helper.emit(LEFT_PAREN27, DroolsEditorType.SYMBOL); }
  			// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:674:9: ( expressionList )?
  			int alt87=2;
  			int LA87_0 = input.LA(1);
  			if ( (LA87_0==BOOL||(LA87_0 >= DECIMAL && LA87_0 <= DECR)||LA87_0==FLOAT||LA87_0==HEX||(LA87_0 >= ID && LA87_0 <= INCR)||(LA87_0 >= LEFT_PAREN && LA87_0 <= LESS)||LA87_0==MINUS||LA87_0==NEGATION||LA87_0==NULL||LA87_0==PLUS||(LA87_0 >= STAR && LA87_0 <= TIME_INTERVAL)) ) {
  				alt87=1;
  			}
  			switch (alt87) {
  				case 1 :
  					// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:674:9: expressionList
  					{
  					pushFollow(FOLLOW_expressionList_in_arguments4081);
  					expressionList();
  					state._fsp--;
  					if (state.failed) return;
  					}
  					break;
  
  			}
  
  			RIGHT_PAREN28=(Token)match(input,RIGHT_PAREN,FOLLOW_RIGHT_PAREN_in_arguments4092); if (state.failed) return;
  			if ( state.backtracking==0 ) { helper.emit(RIGHT_PAREN28, DroolsEditorType.SYMBOL); }
  			}
  
  		}
  
  		catch (RecognitionException re) {
  		    throw re;
  		}
  
  		finally {
  			// do for sure before leaving
  		}
  	}