/// <summary>
/// Sets the Expression property of ExpressionAnimation by converting
/// the given Expression to appropriate string
/// </summary>
/// <typeparam name="T">Type of the Expression</typeparam>
/// <param name="animation">ExpressionAnimation</param>
/// <param name="expression">Expression</param>
/// <returns>Dictionary of parameter names and the parameters</returns>
public static Dictionary <string, object> SetExpression <T>(this ExpressionAnimation animation,
Expression <CompositionLambda <T> > expression)
{
var result = CompositionExpressionEngine.CreateCompositionExpression(expression);
animation.Expression = result.Expression;
animation.SetParameters(result.Parameters);
return(result.Parameters);
}