"invariant" -> function.parameters.single().assertSingleTypeArgumentWithVariance(Variance.INVARIANT)
                    "covariant" -> function.parameters.single().assertSingleTypeArgumentWithVariance(Variance.COVARIANT)
                    "contravariant" -> function.parameters.single().assertSingleTypeArgumentWithVariance(Variance.CONTRAVARIANT)
                }
            }
        }
    }