diff --git a/samples/client/petstore/java/feign/build.gradle b/samples/client/petstore/java/feign/build.gradle
index 94d0029825aa7f389f6d05092685bb1148b9730c..51158af50d78d6f03b99c9d4026ffd1162f2bf59 100644
--- a/samples/client/petstore/java/feign/build.gradle
+++ b/samples/client/petstore/java/feign/build.gradle
@@ -98,7 +98,7 @@ ext {
     swagger_annotations_version = "1.5.22"
     jackson_version = "2.9.10"
     jackson_databind_version = "2.9.10"
-    jackson-databind-nullable-version = "0.2.0"
+    jackson_databind_nullable_version = "0.2.0"
     threepane_version = "2.6.4"
     feign_version = "9.7.0"
     feign_form_version = "2.1.0"
@@ -116,7 +116,7 @@ dependencies {
     compile "com.fasterxml.jackson.core:jackson-core:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-databind:$jackson_databind_version"
-    compile "org.openapitools:jackson-databind-nullable:$jackson-databind-nullable-version"
+    compile "org.openapitools:jackson-databind-nullable:$jackson_databind_nullable_version"
     compile "com.github.joschi.jackson:jackson-datatype-threetenbp:$threepane_version"
     compile "org.apache.oltu.oauth2:org.apache.oltu.oauth2.client:$oltu_version"
     compile "com.brsanthu:migbase64:2.2"
diff --git a/samples/client/petstore/java/feign10x/build.gradle b/samples/client/petstore/java/feign10x/build.gradle
index 7aaee78ff4bf2b982640ddceb24f204b0fe4b758..0d6878503c4505ec703ff6d02ece21da16db5903 100644
--- a/samples/client/petstore/java/feign10x/build.gradle
+++ b/samples/client/petstore/java/feign10x/build.gradle
@@ -98,7 +98,7 @@ ext {
     swagger_annotations_version = "1.5.22"
     jackson_version = "2.9.10"
     jackson_databind_version = "2.9.10"
-    jackson-databind-nullable-version = "0.2.0"
+    jackson_databind_nullable_version = "0.2.0"
     threepane_version = "2.6.4"
     feign_version = "10.2.3"
     feign_form_version = "2.1.0"
@@ -116,7 +116,7 @@ dependencies {
     compile "com.fasterxml.jackson.core:jackson-core:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-databind:$jackson_databind_version"
-    compile "org.openapitools:jackson-databind-nullable:$jackson-databind-nullable-version"
+    compile "org.openapitools:jackson-databind-nullable:$jackson_databind_nullable_version"
     compile "com.github.joschi.jackson:jackson-datatype-threetenbp:$threepane_version"
     compile "org.apache.oltu.oauth2:org.apache.oltu.oauth2.client:$oltu_version"
     compile "com.brsanthu:migbase64:2.2"
diff --git a/samples/client/petstore/java/google-api-client/build.gradle b/samples/client/petstore/java/google-api-client/build.gradle
index 208d7a57dc08816d2ea693ea5ea23f96a69ee169..a16b641c1a69fc32712ce1c95f4859270d84c591 100644
--- a/samples/client/petstore/java/google-api-client/build.gradle
+++ b/samples/client/petstore/java/google-api-client/build.gradle
@@ -98,7 +98,7 @@ ext {
     swagger_annotations_version = "1.5.22"
     jackson_version = "2.9.10"
     jackson_databind_version = "2.9.10"
-    jackson-databind-nullable-version = "0.2.0"
+    jackson_databind_nullable_version = "0.2.0"
     google_api_client_version = "1.23.0"
     jersey_common_version = "2.25.1"
     jodatime_version = "2.9.9"
@@ -115,7 +115,7 @@ dependencies {
     compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-databind:$jackson_databind_version"
     compile "com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:$jackson_version"
-    compile "org.openapitools:jackson-databind-nullable:$jackson-databind-nullable-version"
+    compile "org.openapitools:jackson-databind-nullable:$jackson_databind_nullable_version"
     compile "com.github.joschi.jackson:jackson-datatype-threetenbp:$jackson_threeten_version"
     testCompile "junit:junit:$junit_version"
 }
diff --git a/samples/client/petstore/java/jersey1/build.gradle b/samples/client/petstore/java/jersey1/build.gradle
index d372e0398872a7a806c45fadf2663cf958efa6ca..e94fca44498ee83412761f8f9acaba0f86b8269a 100644
--- a/samples/client/petstore/java/jersey1/build.gradle
+++ b/samples/client/petstore/java/jersey1/build.gradle
@@ -114,7 +114,7 @@ ext {
     swagger_annotations_version = "1.5.22"
     jackson_version = "2.6.4"
     jackson_databind_version = "2.6.4"
-    jackson-databind-nullable-version = "0.2.0"
+    jackson_databind_nullable_version = "0.2.0"
     jersey_version = "1.19.4"
     jodatime_version = "2.9.9"
     junit_version = "4.12"
@@ -129,7 +129,7 @@ dependencies {
     compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-databind:$jackson_databind_version"
     compile "com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:$jackson_version"
-    compile "org.openapitools:jackson-databind-nullable:$jackson-databind-nullable-version"
+    compile "org.openapitools:jackson-databind-nullable:$jackson_databind_nullable_version"
     compile "com.github.joschi.jackson:jackson-datatype-threetenbp:$jackson_version"
     compile "com.brsanthu:migbase64:2.2"
     testCompile "junit:junit:$junit_version"
diff --git a/samples/client/petstore/java/jersey2-java8/build.gradle b/samples/client/petstore/java/jersey2-java8/build.gradle
index 44798b9125fbd75442b53fe7428976142e487a3d..646b451a5437e517a55306ee4d0cd6ac8a01be28 100644
--- a/samples/client/petstore/java/jersey2-java8/build.gradle
+++ b/samples/client/petstore/java/jersey2-java8/build.gradle
@@ -97,7 +97,7 @@ ext {
     swagger_annotations_version = "1.5.22"
     jackson_version = "2.9.10"
     jackson_databind_version = "2.9.10"
-    jackson-databind-nullable-version = "0.2.0"
+    jackson_databind_nullable_version = "0.2.0"
     jersey_version = "2.27"
     junit_version = "4.12"
 }
@@ -111,7 +111,7 @@ dependencies {
     compile "com.fasterxml.jackson.core:jackson-core:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-databind:$jackson_databind_version"
-    compile "org.openapitools:jackson-databind-nullable:$jackson-databind-nullable-version"
+    compile "org.openapitools:jackson-databind-nullable:$jackson_databind_nullable_version"
     compile "com.fasterxml.jackson.datatype:jackson-datatype-jsr310:$jackson_version"
     testCompile "junit:junit:$junit_version"
 }
diff --git a/samples/client/petstore/java/jersey2/build.gradle b/samples/client/petstore/java/jersey2/build.gradle
index 9f9ce6cdf768638f6b5cc92f3227e1e1c6c308c5..c94a36a9fa2ff31fe40cb283bb3dfd0757e9f377 100644
--- a/samples/client/petstore/java/jersey2/build.gradle
+++ b/samples/client/petstore/java/jersey2/build.gradle
@@ -97,7 +97,7 @@ ext {
     swagger_annotations_version = "1.5.22"
     jackson_version = "2.9.10"
     jackson_databind_version = "2.9.10"
-    jackson-databind-nullable-version = "0.2.0"
+    jackson_databind_nullable_version = "0.2.0"
     jersey_version = "2.27"
     junit_version = "4.12"
     threetenbp_version = "2.6.4"
@@ -112,7 +112,7 @@ dependencies {
     compile "com.fasterxml.jackson.core:jackson-core:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-databind:$jackson_databind_version"
-    compile "org.openapitools:jackson-databind-nullable:$jackson-databind-nullable-version"
+    compile "org.openapitools:jackson-databind-nullable:$jackson_databind_nullable_version"
     compile "com.github.joschi.jackson:jackson-datatype-threetenbp:$threetenbp_version"
     compile "com.brsanthu:migbase64:2.2"
     testCompile "junit:junit:$junit_version"
diff --git a/samples/client/petstore/java/resteasy/build.gradle b/samples/client/petstore/java/resteasy/build.gradle
index 0fa0a028d2507aaf4e13398fad4b82f00b4a11b4..cbbbb5116921e226da05addaec447811d5b56e84 100644
--- a/samples/client/petstore/java/resteasy/build.gradle
+++ b/samples/client/petstore/java/resteasy/build.gradle
@@ -97,7 +97,7 @@ ext {
     swagger_annotations_version = "1.5.22"
     jackson_version = "2.9.10"
     jackson_databind_version = "2.9.10"
-    jackson-databind-nullable-version = "0.2.0"
+    jackson_databind_nullable_version = "0.2.0"
     threetenbp_version = "2.6.4"
     resteasy_version = "3.1.3.Final"
     jodatime_version = "2.9.9"
@@ -114,7 +114,7 @@ dependencies {
     compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-databind:$jackson_databind_version"
     compile "com.github.joschi.jackson:jackson-datatype-threetenbp:$threetenbp_version"
-    compile "org.openapitools:jackson-databind-nullable:$jackson-databind-nullable-version"
+    compile "org.openapitools:jackson-databind-nullable:$jackson_databind_nullable_version"
     compile "com.fasterxml.jackson.datatype:jackson-datatype-joda:$jackson_version"
     compile "joda-time:joda-time:$jodatime_version"
     compile "com.brsanthu:migbase64:2.2"
diff --git a/samples/client/petstore/java/resttemplate-withXml/build.gradle b/samples/client/petstore/java/resttemplate-withXml/build.gradle
index 6345e3b0f2d6088d968ebc7d566f633272561d90..a1b680873b25b93c34cae9e45d775fcbd20697c6 100644
--- a/samples/client/petstore/java/resttemplate-withXml/build.gradle
+++ b/samples/client/petstore/java/resttemplate-withXml/build.gradle
@@ -98,7 +98,7 @@ ext {
     swagger_annotations_version = "1.5.22"
     jackson_version = "2.9.10"
     jackson_databind_version = "2.9.10"
-    jackson-databind-nullable-version = "0.2.0"
+    jackson_databind_nullable_version = "0.2.0"
     spring_web_version = "4.3.9.RELEASE"
     jodatime_version = "2.9.9"
     junit_version = "4.12"
@@ -113,7 +113,7 @@ dependencies {
     compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-databind:$jackson_databind_version"
     compile "com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:$jackson_version"
-    compile "org.openapitools:jackson-databind-nullable:$jackson-databind-nullable-version"
+    compile "org.openapitools:jackson-databind-nullable:$jackson_databind_nullable_version"
     compile "com.github.joschi.jackson:jackson-datatype-threetenbp:$jackson_threeten_version"
     compile "com.fasterxml.jackson.dataformat:jackson-dataformat-xml:$jackson_version"
     testCompile "junit:junit:$junit_version"
diff --git a/samples/client/petstore/java/resttemplate/build.gradle b/samples/client/petstore/java/resttemplate/build.gradle
index 6081aaded211937be04cb98e16dd32f3a75d58c9..7c26e098749e6a238dfd65dc456c0683363da277 100644
--- a/samples/client/petstore/java/resttemplate/build.gradle
+++ b/samples/client/petstore/java/resttemplate/build.gradle
@@ -98,7 +98,7 @@ ext {
     swagger_annotations_version = "1.5.22"
     jackson_version = "2.9.10"
     jackson_databind_version = "2.9.10"
-    jackson-databind-nullable-version = "0.2.0"
+    jackson_databind_nullable_version = "0.2.0"
     spring_web_version = "4.3.9.RELEASE"
     jodatime_version = "2.9.9"
     junit_version = "4.12"
@@ -113,7 +113,7 @@ dependencies {
     compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-databind:$jackson_databind_version"
     compile "com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:$jackson_version"
-    compile "org.openapitools:jackson-databind-nullable:$jackson-databind-nullable-version"
+    compile "org.openapitools:jackson-databind-nullable:$jackson_databind_nullable_version"
     compile "com.github.joschi.jackson:jackson-datatype-threetenbp:$jackson_threeten_version"
     testCompile "junit:junit:$junit_version"
 }
diff --git a/samples/client/petstore/java/retrofit2-play24/build.gradle b/samples/client/petstore/java/retrofit2-play24/build.gradle
index 663a8a3475c0fbf8356bc7f65348fc7d1897611b..fc118843370c9996f867b596db98dd7fe5d7d165 100644
--- a/samples/client/petstore/java/retrofit2-play24/build.gradle
+++ b/samples/client/petstore/java/retrofit2-play24/build.gradle
@@ -119,7 +119,7 @@ dependencies {
     compile "com.fasterxml.jackson.core:jackson-core:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-databind:$jackson_databind_version"
-    compile "org.openapitools:jackson-databind-nullable:$jackson-databind-nullable-version"
+    compile "org.openapitools:jackson-databind-nullable:$jackson_databind_nullable_version"
     compile "com.fasterxml.jackson.datatype:jackson-datatype-jsr310:$jackson_version"
 
     testCompile "junit:junit:$junit_version"
diff --git a/samples/client/petstore/java/retrofit2-play25/build.gradle b/samples/client/petstore/java/retrofit2-play25/build.gradle
index 6070a723366e396896059741a4dcbbd4ac83f705..54d850abe3e11c8bd056414cdb19d2abd3df1172 100644
--- a/samples/client/petstore/java/retrofit2-play25/build.gradle
+++ b/samples/client/petstore/java/retrofit2-play25/build.gradle
@@ -121,7 +121,7 @@ dependencies {
     compile "com.fasterxml.jackson.core:jackson-core:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-databind:$jackson_databind_version"
-    compile "org.openapitools:jackson-databind-nullable:$jackson-databind-nullable-version"
+    compile "org.openapitools:jackson-databind-nullable:$jackson_databind_nullable_version"
     compile "com.fasterxml.jackson.datatype:jackson-datatype-jsr310:$jackson_version"
 
     testCompile "junit:junit:$junit_version"
diff --git a/samples/client/petstore/java/retrofit2-play26/build.gradle b/samples/client/petstore/java/retrofit2-play26/build.gradle
index 5a8bdb5e05401a80b14e3b45d79acb8639b27e53..37bbbee850c81c4e8fb59326b08e277ff86e15a8 100644
--- a/samples/client/petstore/java/retrofit2-play26/build.gradle
+++ b/samples/client/petstore/java/retrofit2-play26/build.gradle
@@ -99,7 +99,7 @@ ext {
     retrofit_version = "2.3.0"
     jackson_version = "2.9.10"
     jackson_databind_version = "2.9.10"
-    jackson-databind-nullable-version = "0.2.0"
+    jackson_databind_nullable_version = "0.2.0"
     play_version = "2.6.7"
     swagger_annotations_version = "1.5.22"
     junit_version = "4.12"
@@ -124,7 +124,7 @@ dependencies {
     compile "com.fasterxml.jackson.core:jackson-core:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-databind:$jackson_databind_version"
-    compile "org.openapitools:jackson-databind-nullable:$jackson-databind-nullable-version"
+    compile "org.openapitools:jackson-databind-nullable:$jackson_databind_nullable_version"
     compile "com.fasterxml.jackson.datatype:jackson-datatype-jsr310:$jackson_version"
 
     testCompile "junit:junit:$junit_version"
diff --git a/samples/client/petstore/java/webclient/build.gradle b/samples/client/petstore/java/webclient/build.gradle
index 1637b07938f16dd3cf8f0f5e47ffa7a21293331d..69b9c9a948c2331a630290b618562b86aab4b732 100644
--- a/samples/client/petstore/java/webclient/build.gradle
+++ b/samples/client/petstore/java/webclient/build.gradle
@@ -114,7 +114,7 @@ ext {
     swagger_annotations_version = "1.5.22"
     jackson_version = "2.9.10"
     jackson_databind_version = "2.9.10"
-    jackson-databind-nullable-version = "0.2.0"
+    jackson_databind_nullable_version = "0.2.0"
     jersey_version = "1.19.4"
     jodatime_version = "2.9.9"
     junit_version = "4.12"
@@ -129,7 +129,7 @@ dependencies {
     compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-databind:$jackson_databind_version"
     compile "com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:$jackson_version"
-    compile "org.openapitools:jackson-databind-nullable:$jackson-databind-nullable-version"
+    compile "org.openapitools:jackson-databind-nullable:$jackson_databind_nullable_version"
     compile "com.fasterxml.jackson.datatype:jackson-datatype-jsr310:$jackson_version"
     testCompile "junit:junit:$junit_version"
 }