/// <summary>
/// Creates a pattern for the given pattern text, format info, and template value.
/// </summary>
/// <param name="patternText">Pattern text to create the pattern for</param>
/// <param name="formatInfo">The format info to use in the pattern</param>
/// <param name="templateValue">Template value to use for unspecified fields</param>
/// <returns>A pattern for parsing and formatting zoned date/times.</returns>
/// <exception cref="InvalidPatternException">The pattern text was invalid.</exception>
private static OffsetDateTimePattern Create(string patternText, NodaFormatInfo formatInfo,
OffsetDateTime templateValue)
{
Preconditions.CheckNotNull(patternText, nameof(patternText));
Preconditions.CheckNotNull(formatInfo, nameof(formatInfo));
var pattern = new OffsetDateTimePatternParser(templateValue).ParsePattern(patternText, formatInfo);
return(new OffsetDateTimePattern(patternText, formatInfo, templateValue, pattern));
}
