Search 'graph' for a vertex with element
'value'. The 'key' function is applied to each element before that
element is compared with the value. The comparison is done using the
function 'test'. If you don't need to use key or test, then consider
using find-vertex instead.
|search-for-vertex < cl-graph:basic-graph > < cl-graph:basic-vertex >|
|search-for-vertex < cl-graph:basic-graph > < t >|