Method connect

examples/visual_node_graph/src/system.rs:258–269

(
        &mut self,
        src_node: NodeID,
        dst_node: NodeID,
        src_port: u32,
        dst_port: u32,
    )

    }

    pub fn connect(
        &mut self,
        src_node: NodeID,
        dst_node: NodeID,
        src_port: u32,
        dst_port: u32,
    ) -> Result<(), AddEdgeError> {
        self.cx
            .connect(src_node, dst_node, &[(src_port, dst_port)], true)?;

        Ok(())
    }

    pub fn disconnect(&mut self, src_node: NodeID, dst_node: NodeID, src_port: u32, dst_port: u32) {
        self.cx