'The GMarker object may initialize on GEOS Points or a parameter
that may be instantiated into a GEOS point.  Keyword options map to
GMarkerOptions -- so far only the title option is supported.
Keyword Options:
title:
Title option for GMarker, will be displayed as a tooltip.
draggable:
Draggable option for GMarker, disabled by default.'

def __init__(self, geom, title=None, draggable=False, icon=None):

    if isinstance(geom, six.string_types):
        geom = fromstr(geom)
    if isinstance(geom, (tuple, list)):
        geom = Point(geom)
    if isinstance(geom, Point):
        self.latlng = self.latlng_from_coords(geom.coords)
    else:
        raise TypeError('GMarker    may    only    initialize    on    GEOS    Point    geometry.')
    self.envelope = geom.envelope
    self.title = title
    self.draggable = draggable
    self.icon = icon
    super(GMarker, self).__init__()
