Squashed commit of the following:

commit c5a0d0f7394aa742fa336fff7e7c1d3049761868
Merge: 8c4991ba3e f8ff8c8760
Author: William Cheng <wing328hk@gmail.com>
Date:   Tue Aug 17 18:28:12 2021 +0800

    Merge branch 'mustache-linting' of https://github.com/NathanBaulch/openapi-generator into NathanBaulch-mustache-linting

commit f8ff8c8760
Author: Nathan Baulch <nathan.baulch@gmail.com>
Date:   Thu Aug 5 14:12:47 2021 +1000

    Reorder tags that handle missing values

commit f5d8a33709
Author: Nathan Baulch <nathan.baulch@gmail.com>
Date:   Thu Aug 5 14:08:59 2021 +1000

    Use dot notation where possible

commit 493d14921e
Author: Nathan Baulch <nathan.baulch@gmail.com>
Date:   Thu Aug 5 14:10:49 2021 +1000

    Remove empty tags

commit 32480dc53f
Author: Nathan Baulch <nathan.baulch@gmail.com>
Date:   Thu Aug 5 10:41:58 2021 +1000

    Remove redundant sections

commit a8edabd722
Author: Nathan Baulch <nathan.baulch@gmail.com>
Date:   Wed Aug 4 22:02:22 2021 +1000

    Trim extra EOF new lines

commit e89bd7458e
Author: Nathan Baulch <nathan.baulch@gmail.com>
Date:   Wed Aug 4 21:59:26 2021 +1000

    Trim trailing whitespace

samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/PetApi.java

@@ -120,4 +120,3 @@ public interface PetApi  {
     @Produces({ "application/json" })
     public ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment fileDetail) throws ApiException, ProcessingException;
 }
-

samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/StoreApi.java

@@ -79,4 +79,3 @@ public interface StoreApi  {
     @Produces({ "application/xml", "application/json" })
     public Order placeOrder(Order body) throws ApiException, ProcessingException;
 }
-

samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/UserApi.java

@@ -110,4 +110,3 @@ public interface UserApi  {
     @Path("/{username}")
     public void updateUser(@PathParam("username") String username, User body) throws ApiException, ProcessingException;
 }
-

samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Category.java

@@ -35,7 +35,7 @@ public class Category  {
 
   @JsonbProperty("name")
   private String name;
-  
+
  /**
    * Get id
    * @return id

samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/ModelApiResponse.java

@@ -38,7 +38,7 @@ public class ModelApiResponse  {
 
   @JsonbProperty("message")
   private String message;
-  
+
  /**
    * Get code
    * @return code

samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Order.java

@@ -47,7 +47,7 @@ public class Order  {
   @JsonbTypeDeserializer(StatusEnum.Deserializer.class)
   public enum StatusEnum {
 
-    PLACED(String.valueOf("placed")), APPROVED(String.valueOf("approved")), DELIVERED(String.valueOf("delivered"));    
+    PLACED(String.valueOf("placed")), APPROVED(String.valueOf("approved")), DELIVERED(String.valueOf("delivered"));
 
 
     String value;
@@ -93,7 +93,7 @@ public class Order  {
 
   @JsonbProperty("complete")
   private Boolean complete = false;
-  
+
  /**
    * Get id
    * @return id

samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Pet.java

@@ -53,7 +53,7 @@ public class Pet  {
   @JsonbTypeDeserializer(StatusEnum.Deserializer.class)
   public enum StatusEnum {
 
-    AVAILABLE(String.valueOf("available")), PENDING(String.valueOf("pending")), SOLD(String.valueOf("sold"));    
+    AVAILABLE(String.valueOf("available")), PENDING(String.valueOf("pending")), SOLD(String.valueOf("sold"));
 
 
     String value;
@@ -96,7 +96,7 @@ public class Pet  {
   **/
   @JsonbProperty("status")
   private StatusEnum status;
-  
+
  /**
    * Get id
    * @return id

samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/Tag.java

@@ -35,7 +35,7 @@ public class Tag  {
 
   @JsonbProperty("name")
   private String name;
-  
+
  /**
    * Get id
    * @return id

samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/model/User.java

@@ -56,7 +56,7 @@ public class User  {
   **/
   @JsonbProperty("userStatus")
   private Integer userStatus;
-  
+
  /**
    * Get id
    * @return id