public void Remove(SPRoleDefinitionInstance roleDefinition)
        {
            if (roleDefinition == null)
            {
                return;
            }

            m_roleDefinitionBindingCollection.Remove(roleDefinition.RoleDefinition);
        }
        public void Add(SPRoleDefinitionInstance role)
        {
            if (role == null)
            {
                return;
            }

            m_roleDefinitionCollection.Add(role.RoleDefinition);
        }
        public bool Contains(SPRoleDefinitionInstance roleDefinition)
        {
            if (roleDefinition == null)
            {
                return(false);
            }

            return(m_roleDefinitionBindingCollection.Contains(roleDefinition.RoleDefinition));
        }