# File lib/authlogic/acts_as_authentic/email.rb, line 125
        def validates_uniqueness_of_email_field_options(value = nil)
          rw_config(
            :validates_uniqueness_of_email_field_options,
            value,
            {
              :case_sensitive => false,
              :scope => validations_scope,
              :if => "#{email_field}_changed?".to_sym
            }
          )
        end