def METHOD_NAME(self, _context, layout, armature, bcoll, _icon, _active_data, _active_propname, _index):
    active_bone = armature.edit_bones.active or armature.bones.active
    has_active_bone = active_bone and bcoll.name in active_bone.collections
    layout.prop(bcoll, "name", text="", emboss=False,
                icon='DOT' if has_active_bone else 'BLANK1')
    layout.prop(bcoll, "is_visible", text="", emboss=False,
                icon='HIDE_OFF' if bcoll.is_visible else 'HIDE_ON')