@property<EOL><INDENT>def expected_duration(self):<DEDENT>
return self._expected_duration<EOL>
Gets the expected_duration of this BreakType.
Format: RFC-3339 P[n]Y[n]M[n]DT[n]H[n]M[n]S. The expected length of this break. Precision below minutes is truncated.

:return: The expected_duration of this BreakType.
:rtype: str