docs: public final DSLMapParser.key_chunk_return key_chunk() throws RecognitionException {
  		DSLMapParser.key_chunk_return retval = new DSLMapParser.key_chunk_return();
  		retval.start = input.LT(1);
  
  		Object root_0 = null;
  
  		ParserRuleReturnScope literal17 =null;
  
  
  		try {
  			// src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:164:5: ( ( literal )+ )
  			// src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:164:7: ( literal )+
  			{
  			root_0 = (Object)adaptor.nil();
  
  
  			// src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:164:7: ( literal )+
  			int cnt10=0;
  			loop10:
  			while (true) {
  				int alt10=2;
  				int LA10_0 = input.LA(1);
  				if ( (LA10_0==COLON||(LA10_0 >= LEFT_SQUARE && LA10_0 <= LITERAL)||LA10_0==RIGHT_SQUARE) ) {
  					int LA10_2 = input.LA(2);
  					if ( (synpred12_DSLMap()) ) {
  						alt10=1;
  					}
  
  				}
  
  				switch (alt10) {
  				case 1 :
  					// src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:164:7: literal
  					{
  					pushFollow(FOLLOW_literal_in_key_chunk646);
  					literal17=literal();
  					state._fsp--;
  					if (state.failed) return retval;
  					if ( state.backtracking==0 ) adaptor.addChild(root_0, literal17.getTree());
  
  					}
  					break;
  
  				default :
  					if ( cnt10 >= 1 ) break loop10;
  					if (state.backtracking>0) {state.failed=true; return retval;}
  					EarlyExitException eee = new EarlyExitException(10, input);
  					throw eee;
  				}
  				cnt10++;
  			}
  
  			}
  
  			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;
  	}