partial fix

samples/client/echo_api/java/okhttp-gson-user-defined-templates/modelCopy/Category.java

@@ -25,11 +25,11 @@ import org.openapitools.client.JSON;
  * Category
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.10.0-SNAPSHOT")
+
 public class Category {
   public Category() {
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {

samples/client/echo_api/java/okhttp-gson-user-defined-templates/modelCopy/ModelApiResponse.java

@@ -25,11 +25,11 @@ import org.openapitools.client.JSON;
  * ModelApiResponse
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.10.0-SNAPSHOT")
+
 public class ModelApiResponse {
   public ModelApiResponse() {
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {

samples/client/echo_api/java/okhttp-gson-user-defined-templates/modelCopy/Order.java

@@ -25,11 +25,11 @@ import org.openapitools.client.JSON;
  * Order
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.10.0-SNAPSHOT")
+
 public class Order {
   public Order() {
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {

samples/client/echo_api/java/okhttp-gson-user-defined-templates/modelCopy/Pet.java

@@ -25,11 +25,11 @@ import org.openapitools.client.JSON;
  * Pet
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.10.0-SNAPSHOT")
+
 public class Pet {
   public Pet() {
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {

samples/client/echo_api/java/okhttp-gson-user-defined-templates/modelCopy/Tag.java

@@ -25,11 +25,11 @@ import org.openapitools.client.JSON;
  * Tag
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.10.0-SNAPSHOT")
+
 public class Tag {
   public Tag() {
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {

samples/client/echo_api/java/okhttp-gson-user-defined-templates/modelCopy/User.java

@@ -25,11 +25,11 @@ import org.openapitools.client.JSON;
  * User
  */
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.10.0-SNAPSHOT")
+
 public class User {
   public User() {
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {