parameters: (self, node_type)
docstring: Find all the nodes of a given type.  If the type is a tuple,
          the check is performed for any of the tuple items.
docstring_summary: Find all the nodes of a given type.  If the type is a tuple,
          the check is performed for any of the tuple items.
docstring_tokens: Find all the nodes of a given type . If the type is a tuple the check is performed for any of the tuple items .
function: def find_all(self, node_type):
          """Find all the nodes of a given type.  If the type is a tuple,
          the check is performed for any of the tuple items.
          """
          for child in self.iter_child_nodes():
              if isinstance(child, node_type):
                  yield child
              for result in child.find_all(node_type):
                  yield result
function_tokens: def find_all ( self , node_type ) : for child in self . iter_child_nodes ( ) : if isinstance ( child , node_type ) : yield child for result in child . find_all ( node_type ) : yield result