docs: public final void shiftOp() throws RecognitionException {
  		try {
  			// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:451:5: ( ( LESS LESS | GREATER GREATER GREATER | GREATER GREATER ) )
  			// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:451:7: ( LESS LESS | GREATER GREATER GREATER | GREATER GREATER )
  			{
  			// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:451:7: ( LESS LESS | GREATER GREATER GREATER | GREATER GREATER )
  			int alt46=3;
  			int LA46_0 = input.LA(1);
  			if ( (LA46_0==LESS) ) {
  				alt46=1;
  			}
  			else if ( (LA46_0==GREATER) ) {
  				int LA46_2 = input.LA(2);
  				if ( (LA46_2==GREATER) ) {
  					int LA46_3 = input.LA(3);
  					if ( (LA46_3==GREATER) ) {
  						alt46=2;
  					}
  					else if ( (LA46_3==EOF||LA46_3==BOOL||(LA46_3 >= DECIMAL && LA46_3 <= DECR)||LA46_3==FLOAT||LA46_3==HEX||(LA46_3 >= ID && LA46_3 <= INCR)||(LA46_3 >= LEFT_PAREN && LA46_3 <= LESS)||LA46_3==MINUS||LA46_3==NEGATION||LA46_3==NULL||LA46_3==PLUS||(LA46_3 >= STAR && LA46_3 <= TIME_INTERVAL)) ) {
  						alt46=3;
  					}
  
  					else {
  						if (state.backtracking>0) {state.failed=true; return;}
  						int nvaeMark = input.mark();
  						try {
  							for (int nvaeConsume = 0; nvaeConsume < 3 - 1; nvaeConsume++) {
  								input.consume();
  							}
  							NoViableAltException nvae =
  								new NoViableAltException("", 46, 3, input);
  							throw nvae;
  						} finally {
  							input.rewind(nvaeMark);
  						}
  					}
  
  				}
  
  				else {
  					if (state.backtracking>0) {state.failed=true; return;}
  					int nvaeMark = input.mark();
  					try {
  						input.consume();
  						NoViableAltException nvae =
  							new NoViableAltException("", 46, 2, input);
  						throw nvae;
  					} finally {
  						input.rewind(nvaeMark);
  					}
  				}
  
  			}
  
  			else {
  				if (state.backtracking>0) {state.failed=true; return;}
  				NoViableAltException nvae =
  					new NoViableAltException("", 46, 0, input);
  				throw nvae;
  			}
  
  			switch (alt46) {
  				case 1 :
  					// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:451:9: LESS LESS
  					{
  					match(input,LESS,FOLLOW_LESS_in_shiftOp2100); if (state.failed) return;
  					match(input,LESS,FOLLOW_LESS_in_shiftOp2102); if (state.failed) return;
  					}
  					break;
  				case 2 :
  					// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:452:11: GREATER GREATER GREATER
  					{
  					match(input,GREATER,FOLLOW_GREATER_in_shiftOp2114); if (state.failed) return;
  					match(input,GREATER,FOLLOW_GREATER_in_shiftOp2116); if (state.failed) return;
  					match(input,GREATER,FOLLOW_GREATER_in_shiftOp2118); if (state.failed) return;
  					}
  					break;
  				case 3 :
  					// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:453:11: GREATER GREATER
  					{
  					match(input,GREATER,FOLLOW_GREATER_in_shiftOp2130); if (state.failed) return;
  					match(input,GREATER,FOLLOW_GREATER_in_shiftOp2132); if (state.failed) return;
  					}
  					break;
  
  			}
  
  			}
  
  		}
  
  		catch (RecognitionException re) {
  		    throw re;
  		}
  
  		finally {
  			// do for sure before leaving
  		}
  	}