def break_container_lease(<EOL>self, container_name, lease_break_period=None,<EOL>if_modified_since=None, if_unmodified_since=None, timeout=None):
if (lease_break_period is not None) and (lease_break_period < <NUM_LIT:0> or lease_break_period > <NUM_LIT>):<EOL><INDENT>raise ValueError(_ERROR_INVALID_LEASE_BREAK_PERIOD)<EOL><DEDENT>lease = self._lease_container_impl(container_name, <EOL>_LeaseActions.Break,<EOL>None, <EOL>None, <EOL>lease_break_period,<EOL>None, <EOL>if_modified_since,<EOL>if_unmodified_since,<EOL>timeout)<EOL>return lease['<STR_LIT:time>']<EOL>
Break the lease, if the container has an active lease. Once a lease is
broken, it cannot be renewed. Any authorized request can break the lease;
the request is not required to specify a matching lease ID. When a lease
is broken, the lease break period is allowed to elapse, during which time
no lease operation except break and release can be performed on the container.
When a lease is successfully broken, the response indicates the interval
in seconds until a new lease can be acquired. 

:param str container_name:
    Name of existing container.
:param int lease_break_period:
    This is the proposed duration of seconds that the lease
    should continue before it is broken, between 0 and 60 seconds. This
    break period is only used if it is shorter than the time remaining
    on the lease. If longer, the time remaining on the lease is used.
    A new lease will not be available before the break period has
    expired, but the lease may be held for longer than the break
    period. If this header does not appear with a break
    operation, a fixed-duration lease breaks after the remaining lease
    period elapses, and an infinite lease breaks immediately.
:param datetime if_modified_since:
    A DateTime value. Azure expects the date value passed in to be UTC.
    If timezone is included, any non-UTC datetimes will be converted to UTC.
    If a date is passed in without timezone info, it is assumed to be UTC. 
    Specify this header to perform the operation only
    if the resource has been modified since the specified time.
:param datetime if_unmodified_since:
    A DateTime value. Azure expects the date value passed in to be UTC.
    If timezone is included, any non-UTC datetimes will be converted to UTC.
    If a date is passed in without timezone info, it is assumed to be UTC.
    Specify this header to perform the operation only if
    the resource has not been modified since the specified date/time.
:param int timeout:
    The timeout parameter is expressed in seconds.
:return: Approximate time remaining in the lease period, in seconds.
:return: int