/// <summary>
/// Construct a <see cref="SpanFirstQuery"/> matching spans in <paramref name="match"/> whose end
/// position is less than or equal to <paramref name="end"/>.
/// </summary>
public SpanFirstQuery(SpanQuery match, int end)
: base(match, 0, end)
{
}
public FieldMaskingSpanQuery(SpanQuery maskedQuery, string maskedField)
{
this.maskedQuery = maskedQuery;
this.field = maskedField;
}