@Override
            default @NonNull CompletableFuture<ArgumentParseResult<O>> map(
                    @NonNull CommandContext<C> commandContext,
                    @NonNull U firstResult,
                    @NonNull V secondResult
            ) {
                return ArgumentParseResult.successFuture(this.mapSuccess(commandContext, firstResult, secondResult));
            }
Maps the results of the child parsers to the output type.

@param commandContext the command context
@param firstResult    the first result
@param secondResult   the second result
@return the mapped result
cloud-core/src/main/java/org/incendo/cloud/parser/aggregate/AggregateParserPairBuilder.java