Fix hashcode and equals

Author: jpfinne

modules/openapi-generator/src/main/resources/Java/libraries/webclient/pojo.mustache

@@ -306,8 +306,10 @@ public class {{classname}} {{#parent}}extends {{{.}}} {{/parent}}{{#vendorExtens
     return {{#vars}}{{#vendorExtensions.x-is-jackson-optional-nullable}}equalsNullable(this.{{name}}, {{classVarName}}.{{name}}){{/vendorExtensions.x-is-jackson-optional-nullable}}{{^vendorExtensions.x-is-jackson-optional-nullable}}{{#isByteArray}}Arrays{{/isByteArray}}{{^isByteArray}}Objects{{/isByteArray}}.equals(this.{{name}}, {{classVarName}}.{{name}}){{/vendorExtensions.x-is-jackson-optional-nullable}}{{^-last}} &&
         {{/-last}}{{/vars}}{{#additionalPropertiesType}} &&
         Objects.equals(this.additionalProperties, {{classVarName}}.additionalProperties){{/additionalPropertiesType}}{{#parent}} &&
-        super.equals(o){{/parent}};{{/hasVars}}{{^hasVars}}
-    return {{#parent}}super.equals(o){{/parent}}{{^parent}}true{{/parent}};{{/hasVars}}
+        super.equals(o){{/parent}};{{/hasVars}}{{^hasVars}}{{#additionalPropertiesType}}
+    {{classname}} {{classVarName}} = ({{classname}}) o;
+    return Objects.equals(this.additionalProperties, {{classVarName}}.additionalProperties){{#parent}} && super.equals(o){{/parent}};{{/additionalPropertiesType}}{{^additionalPropertiesType}}
+    return {{#parent}}super.equals(o){{/parent}}{{^parent}}true{{/parent}};{{/additionalPropertiesType}}{{/hasVars}}
   {{/useReflectionEqualsHashCode}}
   }{{#vendorExtensions.x-jackson-optional-nullable-helpers}}
 
@@ -321,7 +323,7 @@ public class {{classname}} {{#parent}}extends {{{.}}} {{/parent}}{{#vendorExtens
     return HashCodeBuilder.reflectionHashCode(this);
   {{/useReflectionEqualsHashCode}}
   {{^useReflectionEqualsHashCode}}
-    return Objects.hash({{#vars}}{{#vendorExtensions.x-is-jackson-optional-nullable}}hashCodeNullable({{name}}){{/vendorExtensions.x-is-jackson-optional-nullable}}{{^vendorExtensions.x-is-jackson-optional-nullable}}{{^isByteArray}}{{name}}{{/isByteArray}}{{#isByteArray}}Arrays.hashCode({{name}}){{/isByteArray}}{{/vendorExtensions.x-is-jackson-optional-nullable}}{{^-last}}, {{/-last}}{{/vars}}{{#parent}}{{#hasVars}}, {{/hasVars}}super.hashCode(){{/parent}}{{#additionalPropertiesType}}, additionalProperties{{/additionalPropertiesType}});
+    return Objects.hash({{#vars}}{{#vendorExtensions.x-is-jackson-optional-nullable}}hashCodeNullable({{name}}){{/vendorExtensions.x-is-jackson-optional-nullable}}{{^vendorExtensions.x-is-jackson-optional-nullable}}{{^isByteArray}}{{name}}{{/isByteArray}}{{#isByteArray}}Arrays.hashCode({{name}}){{/isByteArray}}{{/vendorExtensions.x-is-jackson-optional-nullable}}{{^-last}}, {{/-last}}{{/vars}}{{#parent}}{{#hasVars}}, {{/hasVars}}super.hashCode(){{/parent}}{{#additionalPropertiesType}}{{#hasVars}}, {{/hasVars}}{{^hasVars}}{{#parent}}, {{/parent}}{{/hasVars}}additionalProperties{{/additionalPropertiesType}});
   {{/useReflectionEqualsHashCode}}
   }{{#vendorExtensions.x-jackson-optional-nullable-helpers}}