Update Generated Samples

Signed-off-by: Chrimle <28791817+Chrimle@users.noreply.github.com>

Author: Chrimle

modules/openapi-generator/src/main/resources/java-dubbo/model.mustache

@@ -82,10 +82,7 @@ public class {{classname}} {{#parent}}extends {{{parent}}}{{/parent}}{{^parent}}
    * (except the first line).
    */
   private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
+    return String.valueOf(o).replace("\n", "\n    ");
   }
 }
 {{/model}}

samples/client/echo_api/java/apache-httpclient/src/main/java/org/openapitools/client/model/Bird.java

@@ -130,10 +130,7 @@ public String toString() {
    * (except the first line).
    */
   private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
+    return String.valueOf(o).replace("\n", "\n    ");
   }
 
   /**

samples/client/echo_api/java/apache-httpclient/src/main/java/org/openapitools/client/model/Category.java

@@ -130,10 +130,7 @@ public String toString() {
    * (except the first line).
    */
   private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
+    return String.valueOf(o).replace("\n", "\n    ");
   }
 
   /**

samples/client/echo_api/java/apache-httpclient/src/main/java/org/openapitools/client/model/DataQuery.java

@@ -182,10 +182,7 @@ public String toString() {
    * (except the first line).
    */
   private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
+    return String.valueOf(o).replace("\n", "\n    ");
   }
 
   /**

samples/client/echo_api/java/apache-httpclient/src/main/java/org/openapitools/client/model/DefaultValue.java

@@ -466,10 +466,7 @@ public String toString() {
    * (except the first line).
    */
   private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
+    return String.valueOf(o).replace("\n", "\n    ");
   }
 
   /**

samples/client/echo_api/java/apache-httpclient/src/main/java/org/openapitools/client/model/NumberPropertiesOnly.java

@@ -165,10 +165,7 @@ public String toString() {
    * (except the first line).
    */
   private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
+    return String.valueOf(o).replace("\n", "\n    ");
   }
 
   /**

samples/client/echo_api/java/apache-httpclient/src/main/java/org/openapitools/client/model/Pet.java

@@ -316,10 +316,7 @@ public String toString() {
    * (except the first line).
    */
   private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
+    return String.valueOf(o).replace("\n", "\n    ");
   }
 
   /**

samples/client/echo_api/java/apache-httpclient/src/main/java/org/openapitools/client/model/Query.java

@@ -178,10 +178,7 @@ public String toString() {
    * (except the first line).
    */
   private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
+    return String.valueOf(o).replace("\n", "\n    ");
   }
 
   /**

samples/client/echo_api/java/apache-httpclient/src/main/java/org/openapitools/client/model/Tag.java

@@ -130,10 +130,7 @@ public String toString() {
    * (except the first line).
    */
   private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
+    return String.valueOf(o).replace("\n", "\n    ");
   }
 
   /**

samples/client/echo_api/java/apache-httpclient/src/main/java/org/openapitools/client/model/TestFormObjectMultipartRequestMarker.java

@@ -99,10 +99,7 @@ public String toString() {
    * (except the first line).
    */
   private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
+    return String.valueOf(o).replace("\n", "\n    ");
   }
 
   /**