Add descriptions for Group Member Relations

app/finders/group_members_finder.rb

@@ -4,6 +4,12 @@ class GroupMembersFinder < UnionFinder
   RELATIONS = %i(direct inherited descendants).freeze
   DEFAULT_RELATIONS = %i(direct inherited).freeze
 
+  RELATIONS_DESCRIPTIONS = {
+    direct: 'Members in the group itself',
+    inherited: "Members in the group's ancestor groups",
+    descendants: "Members in the group's subgroups"
+  }.freeze
+
   include CreatedAtFilter
 
   # Params can be any of the following:

app/graphql/types/group_member_relation_enum.rb

@@ -6,7 +6,7 @@ module Types
     description 'Group member relation'
 
     ::GroupMembersFinder::RELATIONS.each do |member_relation|
-      value member_relation.to_s.upcase, value: member_relation, description: "#{member_relation.to_s.titleize} members"
+      value member_relation.to_s.upcase, value: member_relation, description: ::GroupMembersFinder::RELATIONS_DESCRIPTIONS[member_relation]
     end
   end
 end

doc/api/graphql/reference/index.md

@@ -13248,9 +13248,9 @@ Group member relation.
 
 | Value | Description |
 | ----- | ----------- |
-| <a id="groupmemberrelationdescendants"></a>`DESCENDANTS` | Descendants members. |
-| <a id="groupmemberrelationdirect"></a>`DIRECT` | Direct members. |
-| <a id="groupmemberrelationinherited"></a>`INHERITED` | Inherited members. |
+| <a id="groupmemberrelationdescendants"></a>`DESCENDANTS` | Members in the group's subgroups. |
+| <a id="groupmemberrelationdirect"></a>`DIRECT` | Members in the group itself. |
+| <a id="groupmemberrelationinherited"></a>`INHERITED` | Members in the group's ancestor groups. |
 
 ### `HealthStatus`