fix: missing type mapping

Author: efcasado

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

@@ -204,6 +204,7 @@ public ElixirClientCodegen() {
         typeMapping.put("integer", "integer()");
         typeMapping.put("boolean", "boolean()");
         typeMapping.put("array", "list()");
+        typeMapping.put("set", "list()");
         typeMapping.put("object", "map()");
         typeMapping.put("map", "map()");
         typeMapping.put("null", "nil");

samples/client/petstore/elixir/lib/openapi_petstore/model/pet.ex

@@ -21,7 +21,7 @@ defmodule OpenapiPetstore.Model.Pet do
   embedded_schema do
     field :id, :integer
     field :name, :string
-    field :photoUrls, :any, virtual: true
+    field :photoUrls, {:array, :string}
     embeds_many :tags, OpenapiPetstore.Model.Tag
     field :status, :string
     embeds_one :category, OpenapiPetstore.Model.Category