class_docstr: A mapping of registered projection names to projection classes.
docstr: Register a new set of projections.
code: def register(self, *projections):
      """Register a new set of projections."""
      for projection in projections:
          name = projection.name
          self._all_projection_types[name] = projection
  
file_path: catboost/contrib/python/matplotlib/py3/matplotlib/projections/__init__.py
imports: from ..None import axes, _docstring
  from .geo import AitoffAxes, HammerAxes, LambertAxes, MollweideAxes
  from .polar import PolarAxes
label_desc: Use image node_id 2 for calling the ProjectionRegistry obj's underlying member method code with example usage: obj.register() without return types