/// <summary>Gets a value that indicates whether the collection contains the specified <see cref="KeyFrame{T}" />. </summary>
/// <returns>true if the collection contains keyFrame; otherwise, false.</returns>
/// <param name="item">The <see cref="KeyFrame{T}" /> to locate in the collection.</param>
public bool Contains(KeyFrame <T> item)
{
ReadPreamble();
return(_keyFrames.Contains(item));
}
/// <summary>
/// Searches for the specified <see cref="KeyFrame{T}" /> and returns the zero-based index of the first
/// occurrence within the entire collection.
/// </summary>
/// <returns>
/// The zero-based index of the first occurrence of keyFrame within the entire collection, if found; otherwise,
/// -1.
/// </returns>
/// <param name="item">The <see cref="KeyFrame{T}" /> to locate in the collection.</param>
public int IndexOf(KeyFrame <T> item)
{
ReadPreamble();
return(_keyFrames.IndexOf(item));
}