/// <summary>
/// Takes the given image, converts it to a base 64 string and replaces replacementPlaceHolder in the HTML with the Image's base64 string presentation.
/// </summary>
/// <param name="imageFilePath">The file path of the image.</param>
/// <param name="html">The HTML that the image needs to be injected into</param>
/// <param name="replacementPlaceHolder">The replacement placeholder text in the HTML that needs to be replaced with the Image's base64 string presentation</param>
/// <returns></returns>
public static string InjectImageBase64IntoHtml(string imageFilePath, string html, string replacementPlaceHolder)
{
FileSystemHelper.ValidateFileExists(imageFilePath);
byte[] imageBytes = File.ReadAllBytes(imageFilePath);
return(InjectImageBase64IntoHtml(imageBytes, html, replacementPlaceHolder));
}