public @Nullable MetaTypeProxy getKeyValueMetaType(@NotNull YAMLKeyValue keyValue) {
    if (keyValue.getValue() != null) {
      return getMetaTypeProxy(keyValue.getValue());
    }
    Field type = computeMetaType(keyValue);
    return FieldAndRelation.forNullable(type, Field.Relation.OBJECT_CONTENTS);
  }
public @Nullable MetaTypeProxy getKeyValueMetaType(@NotNull YAMLKeyValue keyValue)