@SdkInternalApi
    final DisassociateMergedGraphqlApiResult executeDisassociateMergedGraphqlApi(DisassociateMergedGraphqlApiRequest disassociateMergedGraphqlApiRequest) {

        ExecutionContext executionContext = createExecutionContext(disassociateMergedGraphqlApiRequest);
        AWSRequestMetrics awsRequestMetrics = executionContext.getAwsRequestMetrics();
        awsRequestMetrics.startEvent(Field.ClientExecuteTime);
        Request<DisassociateMergedGraphqlApiRequest> request = null;
        Response<DisassociateMergedGraphqlApiResult> response = null;

        try {
            awsRequestMetrics.startEvent(Field.RequestMarshallTime);
            try {
                request = new DisassociateMergedGraphqlApiRequestProtocolMarshaller(protocolFactory).marshall(super
                        .beforeMarshalling(disassociateMergedGraphqlApiRequest));
                // Binds the request metrics to the current request.
                request.setAWSRequestMetrics(awsRequestMetrics);
                request.addHandlerContext(HandlerContextKey.CLIENT_ENDPOINT, endpoint);
                request.addHandlerContext(HandlerContextKey.ENDPOINT_OVERRIDDEN, isEndpointOverridden());
                request.addHandlerContext(HandlerContextKey.SIGNING_REGION, getSigningRegion());
                request.addHandlerContext(HandlerContextKey.SERVICE_ID, "AppSync");
                request.addHandlerContext(HandlerContextKey.OPERATION_NAME, "DisassociateMergedGraphqlApi");
                request.addHandlerContext(HandlerContextKey.ADVANCED_CONFIG, advancedConfig);

            } finally {
                awsRequestMetrics.endEvent(Field.RequestMarshallTime);
            }

            HttpResponseHandler<AmazonWebServiceResponse<DisassociateMergedGraphqlApiResult>> responseHandler = protocolFactory.createResponseHandler(
                    new JsonOperationMetadata().withPayloadJson(true).withHasStreamingSuccessResponse(false),
                    new DisassociateMergedGraphqlApiResultJsonUnmarshaller());
            response = invoke(request, responseHandler, executionContext);

            return response.getAwsResponse();

        } finally {

            endClientExecution(awsRequestMetrics, request, response);
        }
    }
<p>
Deletes an association between a Merged API and source API using the source API's identifier and the association
ID.
</p>

@param disassociateMergedGraphqlApiRequest
@return Result of the DisassociateMergedGraphqlApi operation returned by the service.
@throws UnauthorizedException
        You aren't authorized to perform this operation.
@throws BadRequestException
        The request is not well formed. For example, a value is invalid or a required field is missing. Check the
        field values, and then try again.
@throws InternalFailureException
        An internal AppSync error occurred. Try your request again.
@throws NotFoundException
        The resource specified in the request was not found. Check the resource, and then try again.
@throws ConcurrentModificationException
        Another modification is in progress at this time and it must complete before you can make your change.
@sample AWSAppSync.DisassociateMergedGraphqlApi
@see <a href="http://docs.aws.amazon.com/goto/WebAPI/appsync-2017-07-25/DisassociateMergedGraphqlApi"
     target="_top">AWS API Documentation</a>
aws-java-sdk-appsync/src/main/java/com/amazonaws/services/appsync/AWSAppSyncClient.java