presto-spi/src/main/java/io/prestosql/spi/type/TypeSignatureParameter.java/TypeSignatureParameter/namedTypeParameter
class TypeSignatureParameter:    public static TypeSignatureParameter namedTypeParameter(NamedTypeSignature namedTypeSignature)
    {
        return new TypeSignatureParameter(ParameterKind.NAMED_TYPE, namedTypeSignature);
    }