feat: annotate deprecated operations as such (#287)

Author: anssari1

customizations/generator/openapi/src/main/resources/templates/expediagroup-sdk/api.mustache

@@ -28,6 +28,9 @@ import com.expediagroup.sdk.core.model.Operation
             * @property params [{{classname}}Params]
         {{/hasNonBodyParams}}
         */
+        {{#isDeprecated}}
+            @Deprecated("This operation is deprecated and will be removed in a future version.")
+        {{/isDeprecated}}
         class {{classname}} {{#isLinkable}}private constructor{{/isLinkable}}(
             {{#hasNonBodyParams}}
                 params: {{classname}}Params{{#isLinkable}}?{{/isLinkable}},
@@ -121,4 +124,4 @@ import com.expediagroup.sdk.core.model.Operation
             {{/isLinkable}}
         }
     {{/operation}}
-{{/operations}}
+{{/operations}}

examples/src/main/java/com/expediagroup/sdk/rapid/examples/services/RapidService.java

@@ -12,5 +12,4 @@ public abstract class RapidService {
             .endpoint(Constants.SANDBOX_URL) // remove to connect to the production environment
             .requestTimeout(10000)
             .build();
-
 }