/// <summary>
/// Returns an existing or creates a new implementation (or re-implementation) for <paramref name="interfaceMethod"/>.
/// Note that the specified implementation is not invoked if a final base implementation is invoked directly (not via the interface).
/// </summary>
/// <param name="interfaceMethod">The interface method that should be implemented.</param>
/// <returns>A <see cref="MutableMethodInfo"/> that is an implementation of the interface method.</returns>
/// <exception cref="NotSupportedException">
/// If the specified method cannot be implemented (or re-implemented), e.g., it is not accessible from the proxy.
/// </exception>
/// <remarks>
/// This method returns one of the following:
/// <list type="number">
/// <item>An existing mutable implementation.</item>
/// <item>A newly created implementation (if no base implementation).</item>
/// <item>An existing mutable override for a base implementation.</item>
/// <item>A newly created override (implicit; or explicit if necessary) for a base implementation (if base implementation is not final).</item>
/// <item>A newly created re-implementation which calls the base implementation.</item>
/// </list>
/// </remarks>
public MutableMethodInfo GetOrAddImplementation(MethodInfo interfaceMethod)
{
ArgumentUtility.CheckNotNull("interfaceMethod", interfaceMethod);
bool isNewlyCreated;
var method = _mutableMemberFactory.GetOrCreateImplementation(this, interfaceMethod, out isNewlyCreated);
if (isNewlyCreated)
{
AddTrackedMethod(method);
}
return(method);
}
