/// Emits a signal about the selection blocking. Emits a signal to change the selection.
/// If the block is true, the signal clear selection, otherwise if restore selection flag allows,
/// the internal operation features are to be selected
/// \param isBlocked the state whether the operation is blocked or unblocked
/// \param isRestoreSelection the state whether the selected objects should be reselected
/// Emits a signal about the selection blocking. Emits a signal to change the selection.
/// If the block is true, the signal clear selection, otherwise if restore selection flag allows,
/// the internal operation features are to be selected
/// \param isBlocked the state whether the operation is blocked or unblocked
/// \param isRestoreSelection the state whether the selected objects should be reselected