Add Asciidoc tags to the Multi-Site Caching example source code for documentation (guide) purposes.

Resolves gh-80.

spring-geode-samples/caching/multi-site/src/main/java/example/app/caching/multisite/client/BootGeodeMultiSiteCachingClientApplication.java

@@ -34,6 +34,7 @@ import org.springframework.data.gemfire.config.annotation.EnableCachingDefinedRe
  * @see org.springframework.data.gemfire.config.annotation.ClientCacheApplication
  * @since 1.3.0
  */
+// tag::class[]
 @SpringBootApplication
 @SuppressWarnings("unused")
 public class BootGeodeMultiSiteCachingClientApplication {
@@ -47,3 +48,4 @@ public class BootGeodeMultiSiteCachingClientApplication {
 	static class GeodeClientConfiguration { }
 
 }
+// end::class[]

spring-geode-samples/caching/multi-site/src/main/java/example/app/caching/multisite/client/model/Customer.java

@@ -32,6 +32,7 @@ import lombok.ToString;
  * @see org.springframework.data.gemfire.mapping.annotation.Region
  * @since 1.3.0
  */
+// tag::class[]
 @Region("Customers")
 @EqualsAndHashCode
 @ToString(of = "name")
@@ -45,3 +46,4 @@ public class Customer {
 	private String name;
 
 }
+// end::class[]

spring-geode-samples/caching/multi-site/src/main/java/example/app/caching/multisite/client/service/CustomerService.java

@@ -42,6 +42,7 @@ import example.app.caching.multisite.client.util.ThreadUtils;
  * @see example.app.caching.multisite.client.model.Customer
  * @since 1.3.0
  */
+// tag::class[]
 @Service
 public class CustomerService {
 
@@ -53,12 +54,14 @@ public class CustomerService {
 
 	private volatile Long sleepInSeconds;
 
+	// tag::find-by-name[]
 	@Cacheable("CustomersByName")
 	public Customer findBy(String name) {
 		setCacheMiss();
 		ThreadUtils.safeSleep(name, Duration.ofSeconds(getSleepInSeconds()));
 		return Customer.newCustomer(this.customerId.incrementAndGet(), name);
 	}
+	// end::find-by-name[]
 
 	public boolean isCacheMiss() {
 		return this.cacheMiss.compareAndSet(true, false);
@@ -79,3 +82,4 @@ public class CustomerService {
 		this.sleepInSeconds = seconds;
 	}
 }
+// end::class[]

spring-geode-samples/caching/multi-site/src/main/java/example/app/caching/multisite/client/web/CustomerController.java

@@ -37,6 +37,7 @@ import example.app.caching.multisite.client.service.CustomerService;
  * @see example.app.caching.multisite.client.service.CustomerService
  * @since 1.3.0
  */
+// tag::class[]
 @RestController
 public class CustomerController {
 
@@ -46,12 +47,14 @@ public class CustomerController {
 	@Autowired
 	private Environment environment;
 
+	// tag::rest-api-endpoint[]
 	@GetMapping("/customers/{name}")
 	public CustomerHolder searchBy(@PathVariable String name) {
 
 		return CustomerHolder.from(this.customerService.findBy(name))
 			.setCacheMiss(this.customerService.isCacheMiss());
 	}
+	// end::rest-api-endpoint[]
 
 	@GetMapping("/ping")
 	public String pingPong() {
@@ -97,3 +100,4 @@ public class CustomerController {
 		}
 	}
 }
+// end::class[]

spring-geode-samples/caching/multi-site/src/main/java/example/app/caching/multisite/server/BootGeodeMultiSiteCachingServerApplication.java

@@ -77,6 +77,7 @@ import example.app.caching.multisite.client.model.Customer;
  * @see org.springframework.data.gemfire.wan.GatewaySenderFactoryBean
  * @since 1.3.0
  */
+// tag::class[]
 @SpringBootApplication
 @SuppressWarnings("unused")
 public class BootGeodeMultiSiteCachingServerApplication {
@@ -97,6 +98,7 @@ public class BootGeodeMultiSiteCachingServerApplication {
 			.run(args);
 	}
 
+	// tag::geode-server-configuration[]
 	@CacheServerApplication(name = "BootGeodeMultiSiteCachingServerApplication", port = 0)
 	static class GeodeServerConfiguration {
 
@@ -113,6 +115,7 @@ public class BootGeodeMultiSiteCachingServerApplication {
 			return customersByName;
 		}
 
+		// tag::server-application-runner[]
 		@Bean
 		ApplicationRunner geodeClusterObjectsBootstrappedAssertionRunner(Environment environment, Cache cache,
 				Region<?, ?> customersByName, GatewayReceiver gatewayReceiver, GatewaySender gatewaySender) {
@@ -140,14 +143,19 @@ public class BootGeodeMultiSiteCachingServerApplication {
 					environment.getProperty("spring.application.name", "UNKNOWN"));
 			};
 		}
+		// end::server-application-runner[]
 	}
+	// end::geode-server-configuration[]
 
+	// tag::locator-manager-configuration[]
 	@Configuration
 	@EnableLocator
 	@EnableManager(start = true)
 	@Profile("locator-manager")
 	static class GeodeLocatorManagerConfiguration { }
+	// end::locator-manager-configuration[]
 
+	// tag::gateway-receiver-configuration[]
 	@Configuration
 	@Profile("gateway-receiver")
 	static class GeodeGatewayReceiverConfiguration {
@@ -164,7 +172,9 @@ public class BootGeodeMultiSiteCachingServerApplication {
 			return gatewayReceiver;
 		}
 	}
+	// end::gateway-receiver-configuration[]
 
+	// tag::gateway-sender-configuration[]
 	@Configuration
 	@Profile("gateway-sender")
 	static class GeodeGatewaySenderConfiguration {
@@ -196,4 +206,6 @@ public class BootGeodeMultiSiteCachingServerApplication {
 			};
 		}
 	}
+	// end::gateway-sender-configuration[]
 }
+// end::class[]