GenericTypeNames only finds type parameters in types, doesn't find types in methods

[knocte]

Testcase (not minimal):

module PeerChannelEncryptorMonad =
    type PeerChannelEncryptorComputation<'T> =
        | PeerChannelEncryptorComputation of
            (PeerChannelEncryptor -> Result<'T * PeerChannelEncryptor, PeerError>)

    let runP pcec initialState =
        let (PeerChannelEncryptorComputation innerFn) = pcec
        innerFn initialState

    let returnP x =
        let innerFn state =
            Ok(x, state)

        PeerChannelEncryptorComputation innerFn

    let bindP
        (f: 'a -> PeerChannelEncryptorComputation<'b>)
        (xT: PeerChannelEncryptorComputation<'a>)
        : PeerChannelEncryptorComputation<'b> =
        let innerFn state =
            runP xT state
            >>= fun (res, state2) ->
                    let h = runP (f res) state2
                    h

        PeerChannelEncryptorComputation innerFn

'a was not flagged by FSharpLint 0.21.2