GetDefaultPermissions function called in every time in a loop

public virtual void InstallPermissions(IPermissionProvider permissionProvider)
        {
            //install new permissions
            var permissions = permissionProvider.GetPermissions();
            foreach (var permission in permissions)
            {
                var permission1 = GetPermissionRecordBySystemName(permission.SystemName);
                if (permission1 == null)
                {
                    //new permission (install it)
                    permission1 = new PermissionRecord
                    {
                        Name = permission.Name,
                        SystemName = permission.SystemName,
                        Category = permission.Category,
                    };


                    //default customer role mappings
                    var defaultPermissions = permissionProvider.GetDefaultPermissions();
                    foreach (var defaultPermission in defaultPermissions)
                    {
                        var customerRole = _customerService.GetCustomerRoleBySystemName(defaultPermission.CustomerRoleSystemName);
                        if (customerRole == null)
                        {
                            //new role (save it)
                            customerRole = new CustomerRole
                            {
                                Name = defaultPermission.CustomerRoleSystemName,
                                Active = true,
                                SystemName = defaultPermission.CustomerRoleSystemName
                            };
                            _customerService.InsertCustomerRole(customerRole);
                        }


                        var defaultMappingProvided = (from p in defaultPermission.PermissionRecords
                                                      where p.SystemName == permission1.SystemName
                                                      select p).Any();
                        var mappingExists = (from p in customerRole.PermissionRecords
                                             where p.SystemName == permission1.SystemName
                                             select p).Any();
                        if (defaultMappingProvided && !mappingExists)
                        {
                            permission1.CustomerRoles.Add(customerRole);
                        }
                    }

                    //save new permission
                    InsertPermissionRecord(permission1);

                    //save localization
                    permission1.SaveLocalizedPermissionName(_localizationService, _languageService);
                }
            }
        }

public virtual void InstallPermissions(IPermissionProvider permissionProvider)
        {
            //install new permissions
            var permissions = permissionProvider.GetPermissions();
 //default customer role mappings
                    var defaultPermissions = permissionProvider.GetDefaultPermissions();
            foreach (var permission in permissions)
            {
                var permission1 = GetPermissionRecordBySystemName(permission.SystemName);
                if (permission1 == null)
                {
                    //new permission (install it)
                    permission1 = new PermissionRecord
                    {
                        Name = permission.Name,
                        SystemName = permission.SystemName,
                        Category = permission.Category,
                    };


                   
                    foreach (var defaultPermission in defaultPermissions)
                    {
                        var customerRole = _customerService.GetCustomerRoleBySystemName(defaultPermission.CustomerRoleSystemName);
                        if (customerRole == null)
                        {
                            //new role (save it)
                            customerRole = new CustomerRole
                            {
                                Name = defaultPermission.CustomerRoleSystemName,
                                Active = true,
                                SystemName = defaultPermission.CustomerRoleSystemName
                            };
                            _customerService.InsertCustomerRole(customerRole);
                        }


                        var defaultMappingProvided = (from p in defaultPermission.PermissionRecords
                                                      where p.SystemName == permission1.SystemName
                                                      select p).Any();
                        var mappingExists = (from p in customerRole.PermissionRecords
                                             where p.SystemName == permission1.SystemName
                                             select p).Any();
                        if (defaultMappingProvided && !mappingExists)
                        {
                            permission1.CustomerRoles.Add(customerRole);
                        }
                    }

                    //save new permission
                    InsertPermissionRecord(permission1);

                    //save localization
                    permission1.SaveLocalizedPermissionName(_localizationService, _languageService);
                }
            }
        }