docs: public final void identifierSuffix() throws RecognitionException {
  		Token LEFT_SQUARE16=null;
  		Token RIGHT_SQUARE17=null;
  		Token DOT18=null;
  		Token LEFT_SQUARE19=null;
  		Token RIGHT_SQUARE20=null;
  
  		try {
  			// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:589:5: ( ( LEFT_SQUARE RIGHT_SQUARE )=> ( LEFT_SQUARE RIGHT_SQUARE )+ DOT class_key | ( ( LEFT_SQUARE )=> LEFT_SQUARE expression RIGHT_SQUARE )+ | arguments )
  			int alt65=3;
  			int LA65_0 = input.LA(1);
  			if ( (LA65_0==LEFT_SQUARE) ) {
  				int LA65_1 = input.LA(2);
  				if ( (LA65_1==RIGHT_SQUARE) && (synpred33_DRL5Expressions())) {
  					alt65=1;
  				}
  				else if ( (LA65_1==BOOL||(LA65_1 >= DECIMAL && LA65_1 <= DECR)||LA65_1==FLOAT||LA65_1==HEX||(LA65_1 >= ID && LA65_1 <= INCR)||(LA65_1 >= LEFT_PAREN && LA65_1 <= LESS)||LA65_1==MINUS||LA65_1==NEGATION||LA65_1==NULL||LA65_1==PLUS||(LA65_1 >= STAR && LA65_1 <= TIME_INTERVAL)) ) {
  					alt65=2;
  				}
  
  				else {
  					if (state.backtracking>0) {state.failed=true; return;}
  					int nvaeMark = input.mark();
  					try {
  						input.consume();
  						NoViableAltException nvae =
  							new NoViableAltException("", 65, 1, input);
  						throw nvae;
  					} finally {
  						input.rewind(nvaeMark);
  					}
  				}
  
  			}
  			else if ( (LA65_0==LEFT_PAREN) ) {
  				alt65=3;
  			}
  
  			else {
  				if (state.backtracking>0) {state.failed=true; return;}
  				NoViableAltException nvae =
  					new NoViableAltException("", 65, 0, input);
  				throw nvae;
  			}
  
  			switch (alt65) {
  				case 1 :
  					// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:589:7: ( LEFT_SQUARE RIGHT_SQUARE )=> ( LEFT_SQUARE RIGHT_SQUARE )+ DOT class_key
  					{
  					// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:589:35: ( LEFT_SQUARE RIGHT_SQUARE )+
  					int cnt63=0;
  					loop63:
  					while (true) {
  						int alt63=2;
  						int LA63_0 = input.LA(1);
  						if ( (LA63_0==LEFT_SQUARE) ) {
  							alt63=1;
  						}
  
  						switch (alt63) {
  						case 1 :
  							// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:589:36: LEFT_SQUARE RIGHT_SQUARE
  							{
  							LEFT_SQUARE16=(Token)match(input,LEFT_SQUARE,FOLLOW_LEFT_SQUARE_in_identifierSuffix3240); if (state.failed) return;
  							if ( state.backtracking==0 ) { helper.emit(LEFT_SQUARE16, DroolsEditorType.SYMBOL); }
  							RIGHT_SQUARE17=(Token)match(input,RIGHT_SQUARE,FOLLOW_RIGHT_SQUARE_in_identifierSuffix3281); if (state.failed) return;
  							if ( state.backtracking==0 ) { helper.emit(RIGHT_SQUARE17, DroolsEditorType.SYMBOL); }
  							}
  							break;
  
  						default :
  							if ( cnt63 >= 1 ) break loop63;
  							if (state.backtracking>0) {state.failed=true; return;}
  							EarlyExitException eee = new EarlyExitException(63, input);
  							throw eee;
  						}
  						cnt63++;
  					}
  
  					DOT18=(Token)match(input,DOT,FOLLOW_DOT_in_identifierSuffix3325); if (state.failed) return;
  					if ( state.backtracking==0 ) { helper.emit(DOT18, DroolsEditorType.SYMBOL); }
  					pushFollow(FOLLOW_class_key_in_identifierSuffix3329);
  					class_key();
  					state._fsp--;
  					if (state.failed) return;
  					}
  					break;
  				case 2 :
  					// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:592:7: ( ( LEFT_SQUARE )=> LEFT_SQUARE expression RIGHT_SQUARE )+
  					{
  					// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:592:7: ( ( LEFT_SQUARE )=> LEFT_SQUARE expression RIGHT_SQUARE )+
  					int cnt64=0;
  					loop64:
  					while (true) {
  						int alt64=2;
  						int LA64_0 = input.LA(1);
  						if ( (LA64_0==LEFT_SQUARE) ) {
  							int LA64_36 = input.LA(2);
  							if ( (synpred34_DRL5Expressions()) ) {
  								alt64=1;
  							}
  
  						}
  
  						switch (alt64) {
  						case 1 :
  							// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:592:8: ( LEFT_SQUARE )=> LEFT_SQUARE expression RIGHT_SQUARE
  							{
  							LEFT_SQUARE19=(Token)match(input,LEFT_SQUARE,FOLLOW_LEFT_SQUARE_in_identifierSuffix3344); if (state.failed) return;
  							if ( state.backtracking==0 ) { helper.emit(LEFT_SQUARE19, DroolsEditorType.SYMBOL); }
  							pushFollow(FOLLOW_expression_in_identifierSuffix3374);
  							expression();
  							state._fsp--;
  							if (state.failed) return;
  							RIGHT_SQUARE20=(Token)match(input,RIGHT_SQUARE,FOLLOW_RIGHT_SQUARE_in_identifierSuffix3402); if (state.failed) return;
  							if ( state.backtracking==0 ) { helper.emit(RIGHT_SQUARE20, DroolsEditorType.SYMBOL); }
  							}
  							break;
  
  						default :
  							if ( cnt64 >= 1 ) break loop64;
  							if (state.backtracking>0) {state.failed=true; return;}
  							EarlyExitException eee = new EarlyExitException(64, input);
  							throw eee;
  						}
  						cnt64++;
  					}
  
  					}
  					break;
  				case 3 :
  					// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:595:9: arguments
  					{
  					pushFollow(FOLLOW_arguments_in_identifierSuffix3418);
  					arguments();
  					state._fsp--;
  					if (state.failed) return;
  					}
  					break;
  
  			}
  		}
  
  		catch (RecognitionException re) {
  		    throw re;
  		}
  
  		finally {
  			// do for sure before leaving
  		}
  	}