parameters: (self, beam_center_x=None, beam_center_y=None)
docstring: Initial beam center is given in pixel coordinates
              @param beam_center_x: pixel position of the beam in x
              @param beam_center_y: pixel position of the beam in y
docstring_summary: Initial beam center is given in pixel coordinates
docstring_tokens: Initial beam center is given in pixel coordinates
function: def __init__(self, beam_center_x=None, beam_center_y=None):
          """
              Initial beam center is given in pixel coordinates
              @param beam_center_x: pixel position of the beam in x
              @param beam_center_y: pixel position of the beam in y
          """
          super(BaseBeamFinder, self).__init__()
          self._beam_center_x = beam_center_x
          self._beam_center_y = beam_center_y
          self._beam_radius = None
          self._datafile = None
          self._persistent = True
function_tokens: def __init__ ( self , beam_center_x = None , beam_center_y = None ) : super ( BaseBeamFinder , self ) . __init__ ( ) self . _beam_center_x = beam_center_x self . _beam_center_y = beam_center_y self . _beam_radius = None self . _datafile = None self . _persistent = True