Slack Admin Apis for Roles and Permissions

Hi everyone,    I have been trying out the slack apis and noticed that two apis, that are available in the enterprise admin dashboard are not available in the admin apis for the JS web client or the rest apis in general. The apis in question are the admin.accountType.permissions.list and the admin.roles.list api. Any reason for this? I noticed the roles applied to any user are available in admin.roles.listAssignments so why not make the role definitions available as well. While we are here, addition of pagination in the usergroups.list api would also be great!