ChangeSignaller<Content> cc_assets (this, DCPContentProperty::NEEDS_ASSETS);
ChangeSignaller<Content> cc_kdm (this, DCPContentProperty::NEEDS_KDM);
ChangeSignaller<Content> cc_name (this, DCPContentProperty::NAME);
ChangeSignaller<Content> cc_assets (this, DCPContentProperty::NEEDS_ASSETS);
ChangeSignaller<Content> cc_kdm (this, DCPContentProperty::NEEDS_KDM);
ChangeSignaller<Content> cc_name (this, DCPContentProperty::NAME);