Function generate_trait_impl 

pub(crate) fn generate_trait_impl(
    make: &SyntaxFactory,
    is_unsafe: bool,
    adt: &Adt,
    trait_: Type,
) -> Impl

Generates the corresponding impl <trait> for Type {} including type and lifetime parameters, with <trait> appended to impl‘s generic parameters’ bounds.

This is useful for traits like PartialEq, since impl<T> PartialEq for U<T> often requires T: PartialEq.