private static async Task <SecurityType[]> ParseSecurityTypesAsync(PipeReader reader, CancellationToken token)
{
SecurityType[] types;
var typesLength = await reader.ReadByteAsync(token);
if (typesLength == 0)
{
throw new NoSecurityTypesException();
}
types = new SecurityType[typesLength];
for (var i = 0; i < typesLength; ++i)
{
types[i] = (SecurityType)await reader.ReadByteAsync(token);
}
return(types);
}