Groups

Manage contact groups

• List groupsGET /groups
• Create groupPOST /groups
• Get groupGET /groups/{groupId}
• Update groupPATCH /groups/{groupId}
• Delete groupDELETE /groups/{groupId}
• Set group iconPOST /groups/{groupId}/icon
• Remove group iconDELETE /groups/{groupId}/icon