private static Stream<Arguments> emailContentTypes() {
        return Stream.of(
            Arguments.of(Named.of("HTML Email", Boolean.TRUE)),
            Arguments.of(Named.of("Plain Email", Boolean.FALSE))
        );
    }
This is {@link SendGridEmailSenderTests}.

@author Misagh Moayyed
@since 7.0.0
support/cas-server-support-sendgrid/src/test/java/org/apereo/cas/mail/SendGridEmailSenderTests.java