Complete Graph

A complete graph on n nodes means that all pairs of distinct nodes have an edge connecting them.

Syntax:
```
ag_catalog.age_create_complete_graph(graph_name Name, nodes int,
vertex_label_name Name DEFAULT = NULL,
vertex_properties agtype DEFAULT = NULL,
edge_label_name Name DEAULT = NULL,
edge_properties agtype DEFAULT = NULL);

```
Input:
- graph_name - Graph Name
- nodes - Number of Nodes
- vertex_label_name - Name of the label to assign each vertex to.
- vertex_properties - Property values to assign each vertex. Default is NULL
- edge_label_name - Name of the label to assign each edge to.
- edge_properties - Property values to assign each edge. Default is NULL

Returns GraphId?

https://en.wikipedia.org/wiki/Complete_graph