parameters: (self, name)
return_statement: return self.get_plugin(name) is not None
docstring: Return ``True`` if a plugin with the given name is registered.
docstring_summary: Return ``True`` if a plugin with the given name is registered.
docstring_tokens: Return True if a plugin with the given name is registered .
function: def has_plugin(self, name):
          """ Return ``True`` if a plugin with the given name is registered. """
          return self.get_plugin(name) is not None
function_tokens: def has_plugin ( self , name ) : return self . get_plugin ( name ) is not None