case BLOCK_NULL : ret = tr("A parameter of type AbstractBlock* has been provided with NULL value."); break;
case BLOCK_INVALID_TYPE : ret = tr("A parameter of type AbstractBlock* is used with an incorrect instance type."); break;
case IFACE_NULL : ret = tr("A parameter of type AbstractInterface* has been provided with NULL value."); break;
case BLOCK_NULL : ret = tr("A parameter of type AbstractBlock* has been provided with NULL value."); break;
case BLOCK_INVALID_TYPE : ret = tr("A parameter of type AbstractBlock* is used with an incorrect instance type."); break;
case IFACE_NULL : ret = tr("A parameter of type AbstractInterface* has been provided with NULL value."); break;