linkStyle classDef and link group style definition

I wish to attribute the properties of some edges by some a priori defined classDef as it is possible to nodes. I tried to substitute the repeated properties by the defined classDef, but the configuration does not apply. An alternative to avoid repetition is by group similar edges likeso linkStyle 0, 1, 4, 6, 7, 8, 9 stroke:gold, stroke-width:4px. The syntax, however, is not available.

graph TD
      A([Start]) ==> B[Step 1]
      B ==> C{Flow 1}
      C -- Choice 1.1 --> D[Step 2.1]
      C -- Choice 1.3 --> I[Step 2.3]
      C == Choice 1.2 ==> E[Step 2.2]
      D --> F{Flow 2}
      E ==> F{Flow 2}
      F{Flow 2} == Choice 2.1 ==> H[Feedback node]
      H[Feedback node] ==> B[Step 1]
      F{Flow 2} == Choice 2.2 ==> G((Finish))
      
      linkStyle 0 stroke:gold, stroke-width:4px
      linkStyle 1 stroke:gold, stroke-width:4px
      linkStyle 4 stroke:gold, stroke-width:4px
      linkStyle 6 stroke:gold, stroke-width:4px
      linkStyle 7 stroke:gold, stroke-width:4px
      linkStyle 8 stroke:gold, stroke-width:4px
      linkStyle 9 stroke:gold, stroke-width:4px
      
      classDef start_node fill:#3B1,stroke:#391,stroke-width:8px
      classDef finish_node fill:#3B1,stroke:#391,stroke-width:8px
      classDef active_node fill:#0CF,stroke:#09F,stroke-width:6px
      classDef unactive_node fill:#e0e0e0,stroke:#bdbdbd,stroke-width:3px      
      classDef bugged_node fill:#F88,stroke:#F22,stroke-width:3px

      classDef pathEdge stroke:gold, stroke-width:4px

      class A start_node;
      class B active_node;
      class C active_node;
      class D unactive_node;
      class E active_node;
      class F active_node;
      class G finish_node;
      class H active_node;
      class I bugged_node
      

[brunolnetto]

I look forward for the answer while you look for it with your binocle.

[brunolnetto]

A working woman.