How does one collapse certain groups on a molecule, such as CF3?

**Steps to Reproduce**
1. Use Indigo library version 1.18 in VB.Net environment, installed through NuGet;
2. Use a MolFile that contains a trifluoromethyl group such as TFA as indigo.loadMolecule();
3. Try to set rendering option 'render-superatom-mode'

**Expected behavior**
Expected to see CF3 as a collapsed group instead of CFFF, with a further possibility to selectively explode/collapse certain groups in a molecule discretely, such as R-NO2. Phenyl groups should not be collapsed into Ph but should retain their ring structure.

**Actual behavior**
'render-superatom-mode' not found as a rendering option;

**Environment details:**
Visual Studio Professional 2022, ver.17.9.2
Microsoft Windows 10 Pro, x64

**Attachments**

Start by inspecting Indigo's rendering-option handling and the indigo.loadMolecule() path for MolFile superatoms such as CF3. Check how render-superatom-mode is exposed in Indigo 1.18 and how selective collapse or expansion could preserve phenyl rings. Done means the option is available in the VB.Net environment and the requested groups render collapsed or expanded as specified.

Written by the indexing model from the issue text.