curl -i -X POST "https://api.box.com/2.0/metadata_taxonomies/enterprise_123456/geography/levels:append" \
     -H "authorization: Bearer <ACCESS_TOKEN>" \
     -H "content-type: application/json" \
     -d '{
       "displayName": "City",
       "description": "City Level"
     }'

client.metadata_taxonomies.add_metadata_taxonomy_level(
    namespace, taxonomy_key, "Region", description="Region Description"
)

await client.metadataTaxonomies.addMetadataTaxonomyLevel(
  namespace,
  taxonomyKey,
  {
    displayName: 'Region',
    description: 'Region Description',
  } satisfies AddMetadataTaxonomyLevelRequestBody,
);

try await client.metadataTaxonomies.addMetadataTaxonomyLevel(namespace: namespace, taxonomyKey: taxonomyKey, requestBody: AddMetadataTaxonomyLevelRequestBody(displayName: "Region", description: "Region Description"))

client.getMetadataTaxonomies().addMetadataTaxonomyLevel(namespace, taxonomyKey, new AddMetadataTaxonomyLevelRequestBody.Builder("Region").description("Region Description").build())

await client.MetadataTaxonomies.AddMetadataTaxonomyLevelAsync(namespaceParam: namespaceParam, taxonomyKey: taxonomyKey, requestBody: new AddMetadataTaxonomyLevelRequestBody(displayName: "Region") { Description = "Region Description" });

{
  "entries": [
    {
      "displayName": "Continent",
      "description": "Continent",
      "level": 1
    }
  ]
}

{
  "type": "error",
  "status": 400,
  "code": "item_name_invalid",
  "message": "Method Not Allowed",
  "context_info": {
    "message": "Something went wrong"
  },
  "help_url": "https://developer.box.com/guides/api-calls/permissions-and-errors/common-errors/",
  "request_id": "abcdef123456"
}

{
  "type": "error",
  "status": 400,
  "code": "item_name_invalid",
  "message": "Method Not Allowed",
  "context_info": {
    "message": "Something went wrong"
  },
  "help_url": "https://developer.box.com/guides/api-calls/permissions-and-errors/common-errors/",
  "request_id": "abcdef123456"
}

{
  "type": "error",
  "status": 400,
  "code": "item_name_invalid",
  "message": "Method Not Allowed",
  "context_info": {
    "message": "Something went wrong"
  },
  "help_url": "https://developer.box.com/guides/api-calls/permissions-and-errors/common-errors/",
  "request_id": "abcdef123456"
}