@step(CHECK_PREFIX + r'<STR_LIT>')<EOL>def mail_sent_content_multiline(self):
return mail_sent_content(self, self.multiline, '<STR_LIT:body>')<EOL>
Test the body of an email contains (assert text in) the given multiline
string.

This step strictly applies whitespace.

Example:

.. code-block:: gherkin

    Then I have sent an email with the following in the body:
    \"\"\"
    Dear Mr. Panda,
    \"\"\"