parameters: (self, node)
docstring: Add node to graph.
docstring_summary: Add node to graph.
docstring_tokens: Add node to graph .
function: def add_node(self, node):
          """Add node to graph."""
          if not self.find_node(node):
              self.nodes[node.key()] = {'node': node, 'next_nodes': []}
function_tokens: def add_node ( self , node ) : if not self . find_node ( node ) : self . nodes [ node . key ( ) ] = { 'node' : node , 'next_nodes' : [ ] }