Function ssi::did_resolve::get_verification_methods

pub async fn get_verification_methods(
    did: &str, 
    verification_relationship: VerificationRelationship, 
    resolver: &dyn DIDResolver
) -> Result<HashMap<String, VerificationMethodMap>, Error>

Get the resolved verification method maps for a given DID (including its controllers, recursively) and verification relationship (proof purpose).