// Annoying, but GaxPreconditions.CheckArgument doesn't return anything, because it doesn't have the whole argument.
// Maybe we should have an overload for that. (It's only really a problem in constructor chaining...)
private static AnnotateImageResponse CheckHasError(AnnotateImageResponse response)
{
GaxPreconditions.CheckNotNull(response, nameof(response));
GaxPreconditions.CheckArgument(response.Error != null, nameof(response), "response must contain an error");
return(response);
}
/// <summary>
/// Constructs an exception based on the error in <paramref name="response"/>.
/// </summary>
/// <param name="response">The response containing the error. Must not be null, and the <see cref="AnnotateImageResponse.Error"/>
/// property must not be null.</param>
public AnnotateImageException(AnnotateImageResponse response) : base(CheckHasError(response).Error.Message)
{
this.Response = response;
}