class_docstr: Tick formatter for a longitude axis.
class_docstr_tok: ["Tick","formatter","for","a","longitude","axis","."]
code: def _format_degrees(self, deg):
      return _PlateCarreeFormatter._format_degrees(
          self, self._fix_lons(deg)
      )
  
imports: import matplotlib
  from matplotlib.ticker import Formatter, MaxNLocator
  import numpy
  import cartopy.crs
  from cartopy.mpl.geoaxes import GeoAxes
label_desc: Use image node_id 5 for calling the LongitudeFormatter obj's underlying member method code with example usage: obj._format_degrees(deg) and returns: _PlateCarreeFormatter