docs: public final DSLMapParser.condition_key_return condition_key() throws RecognitionException {
  		DSLMapParser.condition_key_return retval = new DSLMapParser.condition_key_return();
  		retval.start = input.LT(1);
  
  		Object root_0 = null;
  
  		Token value=null;
  
  		Object value_tree=null;
  		RewriteRuleTokenStream stream_LITERAL=new RewriteRuleTokenStream(adaptor,"token LITERAL");
  
  		try {
  			// src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:252:5: ({...}?value= LITERAL -> VT_CONDITION[$value] )
  			// src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:252:7: {...}?value= LITERAL
  			{
  			if ( !((validateIdentifierKey("condition")||validateIdentifierKey("when"))) ) {
  				if (state.backtracking>0) {state.failed=true; return retval;}
  				throw new FailedPredicateException(input, "condition_key", "validateIdentifierKey(\"condition\")||validateIdentifierKey(\"when\")");
  			}
  			value=(Token)match(input,LITERAL,FOLLOW_LITERAL_in_condition_key1599); if (state.failed) return retval; 
  			if ( state.backtracking==0 ) stream_LITERAL.add(value);
  
  			// AST REWRITE
  			// elements: 
  			// token labels: 
  			// rule labels: retval
  			// token list labels: 
  			// rule list labels: 
  			// wildcard labels: 
  			if ( state.backtracking==0 ) {
  			retval.tree = root_0;
  			RewriteRuleSubtreeStream stream_retval=new RewriteRuleSubtreeStream(adaptor,"rule retval",retval!=null?retval.getTree():null);
  
  			root_0 = (Object)adaptor.nil();
  			// 253:5: -> VT_CONDITION[$value]
  			{
  				adaptor.addChild(root_0, (Object)adaptor.create(VT_CONDITION, value));
  			}
  
  
  			retval.tree = root_0;
  			}
  
  			}
  
  			retval.stop = input.LT(-1);
  
  			if ( state.backtracking==0 ) {
  			retval.tree = (Object)adaptor.rulePostProcessing(root_0);
  			adaptor.setTokenBoundaries(retval.tree, retval.start, retval.stop);
  			}
  		}
  		catch (RecognitionException re) {
  			reportError(re);
  			recover(input,re);
  			retval.tree = (Object)adaptor.errorNode(input, retval.start, input.LT(-1), re);
  		}
  		finally {
  			// do for sure before leaving
  		}
  		return retval;
  	}