<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def list_quota_volume(name):
    '''
    List quotas of glusterfs volume

    name
        Name of the gluster volume

    CLI Example:

    .. code-block:: bash

        salt '*' glusterfs.list_quota_volume <volume>
    '''
    cmd = 'volume quota {0}'.format(name)
    cmd += ' list'

    root = _gluster_xml(cmd)
    if not _gluster_ok(root):
        return None

    ret = {}
    for limit in _iter(root, 'limit'):
        path = limit.find('path').text
        ret[path] = _etree_to_dict(limit)

    return ret