/// <summary>
/// The behavior is as follow:
/// Creates a copy of an EntityType from clipboard format in Entity Model if:
/// - The entity-type does not exist in the model.
/// - The passed in diagram parameter is null.
/// OR
/// Create the shape for the entity-type in the Diagram Model if:
/// - The diagram is not null AND the entity-type exists in the model AND the corresponding entity-type-shape does not exist in the diagram.
/// </summary>
/// <param name="diagram"></param>
/// <param name="clipboardEntity"></param>
/// <param name="modelSpace"></param>
internal CopyEntityCommand(Diagram diagram, EntityTypeClipboardFormat clipboardEntity, ModelSpace modelSpace)
{
_clipboardEntity = clipboardEntity;
_modelSpace = modelSpace;
_diagram = diagram;
}
/// <summary>
/// Creates a copy of EntityType from clipboard format
/// </summary>
/// <param name="clipboardEntity"></param>
/// <param name="modelSpace"></param>
/// <returns></returns>
internal CopyEntityCommand(EntityTypeClipboardFormat clipboardEntity, ModelSpace modelSpace)
: this(null, clipboardEntity, modelSpace)
{
}
