Always serialize required nullable fields

.generator/src/generator/templates/model_simple.j2

@@ -16,6 +16,9 @@ pub struct {{ name }} {
     {%- endif %}
 {%- if schema.deprecated %}
 	#[deprecated]
+{%- endif %}
+{%- if required and nullable %}
+	#[serialize_always]
 {%- endif %}
     #[serde(rename = "{{ attr }}"{% if not required and nullable%}, default, with = "::serde_with::rust::double_option"{% endif %})]
     pub {{propertyName}}: {{dataType}},

src/datadogV1/model/model_shared_dashboard_update_request.rs

@@ -10,6 +10,7 @@ use serde_with::skip_serializing_none;
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
 pub struct SharedDashboardUpdateRequest {
     /// Timeframe setting for the shared dashboard.
+    #[serialize_always]
     #[serde(rename = "global_time")]
     pub global_time: Option<crate::datadogV1::model::SharedDashboardUpdateRequestGlobalTime>,
     /// Whether to allow viewers to select a different global time setting for the shared dashboard.

src/datadogV2/model/model_incident_create_relationships.rs

@@ -10,6 +10,7 @@ use serde_with::skip_serializing_none;
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
 pub struct IncidentCreateRelationships {
     /// Relationship to user.
+    #[serialize_always]
     #[serde(rename = "commander_user")]
     pub commander_user: Option<crate::datadogV2::model::NullableRelationshipToUser>,
 }

src/datadogV2/model/model_logs_archive_attributes.rs

@@ -10,6 +10,7 @@ use serde_with::skip_serializing_none;
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
 pub struct LogsArchiveAttributes {
     /// An archive's destination.
+    #[serialize_always]
     #[serde(rename = "destination")]
     pub destination: Option<crate::datadogV2::model::LogsArchiveDestination>,
     /// To store the tags in the archive, set the value "true".

src/datadogV2/model/model_nullable_relationship_to_user.rs

@@ -10,6 +10,7 @@ use serde_with::skip_serializing_none;
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
 pub struct NullableRelationshipToUser {
     /// Relationship to user object.
+    #[serialize_always]
     #[serde(rename = "data")]
     pub data: Option<crate::datadogV2::model::NullableRelationshipToUserData>,
 }