How to control specular/glossyness of glass shader in cycles

How to control specular/glossyness of glass shader in cycles

I am trying to control the amount glossyness/specular (not roughness) of glass but not able to find any option in cycles. I have tried both the traditional glass shader and the new Principled BSDF

How to create a glass shader in Eevee and Cycles

Architectural

Glossy BSDF — Blender Manual

Blender: Introduction to Shader Editor - STYLY

modeling - I have an undesirable black area on my glass shader

Reducing Noise — Blender Manual

Realistic Glass Shader - Blender Market

shadows - Realistic plane glass outdoor scene with cycles and hdri

How to control specular/glossyness of glass shader in cycles

Glass shader tuning for Cycles render engine

Simple Lit shader Package Manager UI website