Resolution for #937 because it's literally 4 lines of code

src/Discord.Net.Commands/Builders/ModuleBuilder.cs

@@ -19,6 +19,7 @@ namespace Discord.Commands.Builders
         public string Name { get; set; }
         public string Summary { get; set; }
         public string Remarks { get; set; }
+        public string Group { get; set; }
 
         public IReadOnlyList<CommandBuilder> Commands => _commands;
         public IReadOnlyList<ModuleBuilder> Modules => _submodules;

src/Discord.Net.Commands/Builders/ModuleClassBuilder.cs

@@ -118,6 +118,7 @@ namespace Discord.Commands
                         break;
                     case GroupAttribute group:
                         builder.Name = builder.Name ?? group.Prefix;
+                        builder.Group = group.Prefix;
                         builder.AddAliases(group.Prefix);
                         break;
                     case PreconditionAttribute precondition:

src/Discord.Net.Commands/Info/ModuleInfo.cs

@@ -13,6 +13,7 @@ namespace Discord.Commands
         public string Name { get; }
         public string Summary { get; }
         public string Remarks { get; }
+        public string Group { get; set; }
 
         public IReadOnlyList<string> Aliases { get; }
         public IReadOnlyList<CommandInfo> Commands { get; }
@@ -31,6 +32,7 @@ namespace Discord.Commands
             Name = builder.Name;
             Summary = builder.Summary;
             Remarks = builder.Remarks;
+            Group = builder.Group;
             Parent = parent;
 
             //TypeInfo = builder.TypeInfo;