docs: public final BaseDescr andExpression() throws RecognitionException {
  		BaseDescr result = null;
  
  
  		BaseDescr left =null;
  		BaseDescr right =null;
  
  		try {
  			// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:273:3: (left= equalityExpression ( AMPER right= equalityExpression )* )
  			// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:273:5: left= equalityExpression ( AMPER right= equalityExpression )*
  			{
  			pushFollow(FOLLOW_equalityExpression_in_andExpression1348);
  			left=equalityExpression();
  			state._fsp--;
  			if (state.failed) return result;
  			if ( state.backtracking==0 ) { if( buildDescr  ) { result = left; } }
  			// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:274:3: ( AMPER right= equalityExpression )*
  			loop30:
  			while (true) {
  				int alt30=2;
  				int LA30_0 = input.LA(1);
  				if ( (LA30_0==AMPER) ) {
  					alt30=1;
  				}
  
  				switch (alt30) {
  				case 1 :
  					// src/main/resources/org/drools/compiler/lang/DRL5Expressions.g:274:5: AMPER right= equalityExpression
  					{
  					match(input,AMPER,FOLLOW_AMPER_in_andExpression1356); if (state.failed) return result;
  					pushFollow(FOLLOW_equalityExpression_in_andExpression1360);
  					right=equalityExpression();
  					state._fsp--;
  					if (state.failed) return result;
  					if ( state.backtracking==0 ) { if( buildDescr  ) {
  					               ConstraintConnectiveDescr descr = ConstraintConnectiveDescr.newIncAnd();
  					               descr.addOrMerge( result );
  					               descr.addOrMerge( right );
  					               result = descr;
  					           }
  					         }
  					}
  					break;
  
  				default :
  					break loop30;
  				}
  			}
  
  			}
  
  		}
  
  		catch (RecognitionException re) {
  		    throw re;
  		}
  
  		finally {
  			// do for sure before leaving
  		}
  		return result;
  	}