[codegen] Fix 'super.HashCode' for oneOf and allOf Implementations (retry) (OpenAPITools#5830)

* Added hasVars after completion of all model post-processing (OpenAPITools#5587)

* Post ensure-up-to-date

* Update to check the size of vars and not assume non-null

Author: jburgess

modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java

@@ -2320,6 +2320,7 @@ public CodegenModel fromModel(String name, Schema schema) {
             for (CodegenProperty prop : m.vars) {
                 postProcessModelProperty(m, prop);
             }
+            m.hasVars = m.vars.size() > 0;
         }
         if (m.allVars != null) {
             for (CodegenProperty prop : m.allVars) {

samples/client/petstore/dart2/openapi/.openapi-generator/VERSION

@@ -1 +1 @@
-4.3.0-SNAPSHOT
+4.3.1-SNAPSHOT

samples/schema/petstore/mysql/mysql_schema.sql

@@ -245,6 +245,13 @@ CREATE TABLE IF NOT EXISTS `EnumArrays` (
   `array_enum` JSON DEFAULT NULL
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
+--
+-- Table structure for table `EnumClass` generated from model 'EnumClass'
+--
+
+CREATE TABLE IF NOT EXISTS `EnumClass` (
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
 --
 -- Table structure for table `Enum_Test` generated from model 'EnumUnderscoreTest'
 --
@@ -377,6 +384,13 @@ CREATE TABLE IF NOT EXISTS `OuterComposite` (
   `my_boolean` TINYINT(1) DEFAULT NULL
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
+--
+-- Table structure for table `OuterEnum` generated from model 'OuterEnum'
+--
+
+CREATE TABLE IF NOT EXISTS `OuterEnum` (
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
 --
 -- Table structure for table `Pet` generated from model 'Pet'
 --

samples/server/petstore/php-slim4/.openapi-generator/VERSION

@@ -1 +1 @@
-4.3.0-SNAPSHOT
+4.3.1-SNAPSHOT